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    <loc>https://metasystema.org/rfc/4303-ip-encapsulating-security-payload-esp</loc>
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    <loc>https://metasystema.org/rfc/4304-extended-sequence-number-esn-addendum-to-ipsec-domain-of-interpretation-doi-for</loc>
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    <loc>https://metasystema.org/rfc/4305-cryptographic-algorithm-implementation-requirements-for-encapsulating-security-p</loc>
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    <loc>https://metasystema.org/rfc/4306-internet-key-exchange-ikev2-protocol</loc>
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    <loc>https://metasystema.org/rfc/4307-cryptographic-algorithms-for-use-in-the-internet-key-exchange-version-2-ikev2</loc>
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    <loc>https://metasystema.org/rfc/4308-cryptographic-suites-for-ipsec</loc>
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    <loc>https://metasystema.org/rfc/4309-using-advanced-encryption-standard-aes-ccm-mode-with-ipsec-encapsulating-securit</loc>
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    <loc>https://metasystema.org/rfc/4310-domain-name-system-dns-security-extensions-mapping-for-the-extensible-provisioni</loc>
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    <loc>https://metasystema.org/rfc/4311-ipv6-host-to-router-load-sharing</loc>
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    <loc>https://metasystema.org/rfc/4312-the-camellia-cipher-algorithm-and-its-use-with-ipsec</loc>
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    <loc>https://metasystema.org/rfc/4313-requirements-for-distributed-control-of-automatic-speech-recognition-asr-speaker</loc>
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    <loc>https://metasystema.org/rfc/4314-imap4-access-control-list-acl-extension</loc>
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    <loc>https://metasystema.org/rfc/4315-internet-message-access-protocol-imap-uidplus-extension</loc>
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    <loc>https://metasystema.org/rfc/4316-datatypes-for-web-distributed-authoring-and-versioning-webdav-properties</loc>
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    <loc>https://metasystema.org/rfc/4317-session-description-protocol-sdp-offer-answer-examples</loc>
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    <loc>https://metasystema.org/rfc/4318-definitions-of-managed-objects-for-bridges-with-rapid-spanning-tree-protocol</loc>
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    <loc>https://metasystema.org/rfc/4319-definitions-of-managed-objects-for-high-bit-rate-dsl-2nd-generation-hdsl2-and-si</loc>
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    <loc>https://metasystema.org/rfc/4320-actions-addressing-identified-issues-with-the-session-initiation-protocol-s-sip</loc>
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    <loc>https://metasystema.org/rfc/4321-problems-identified-associated-with-the-session-initiation-protocol-s-sip-non-in</loc>
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    <loc>https://metasystema.org/rfc/4322-opportunistic-encryption-using-the-internet-key-exchange-ike</loc>
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    <loc>https://metasystema.org/rfc/4323-data-over-cable-system-interface-specification-quality-of-service-management-inf</loc>
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    <loc>https://metasystema.org/rfc/4324-calendar-access-protocol-cap</loc>
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    <loc>https://metasystema.org/rfc/4325-internet-x-509-public-key-infrastructure-authority-information-access-certificat</loc>
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    <loc>https://metasystema.org/rfc/4326-unidirectional-lightweight-encapsulation-ule-for-transmission-of-ip-datagrams-ov</loc>
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    <loc>https://metasystema.org/rfc/4327-link-management-protocol-lmp-management-information-base-mib</loc>
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    <loc>https://metasystema.org/rfc/4328-generalized-multi-protocol-label-switching-gmpls-signaling-extensions-for-g-709</loc>
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    <loc>https://metasystema.org/rfc/4329-scripting-media-types</loc>
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    <loc>https://metasystema.org/rfc/4334-certificate-extensions-and-attributes-supporting-authentication-in-point-to-poin</loc>
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    <loc>https://metasystema.org/rfc/4340-datagram-congestion-control-protocol-dccp</loc>
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    <loc>https://metasystema.org/rfc/4347-datagram-transport-layer-security</loc>
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    <loc>https://metasystema.org/rfc/4355-iana-registration-for-enumservices-email-fax-mms-ems-and-sms</loc>
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    <loc>https://metasystema.org/rfc/4362-robust-header-compression-rohc-a-link-layer-assisted-profile-for-ip-udp-rtp</loc>
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    <loc>https://metasystema.org/rfc/4373-lightweight-directory-access-protocol-ldap-bulk-update-replication-protocol-lbur</loc>
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    <loc>https://metasystema.org/rfc/4376-requirements-for-floor-control-protocols</loc>
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    <loc>https://metasystema.org/rfc/4377-operations-and-management-oam-requirements-for-multi-protocol-label-switched-mpl</loc>
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    <loc>https://metasystema.org/rfc/4378-a-framework-for-multi-protocol-label-switching-mpls-operations-and-management-oa</loc>
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    <loc>https://metasystema.org/rfc/4379-detecting-multi-protocol-label-switched-mpls-data-plane-failures</loc>
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    <loc>https://metasystema.org/rfc/4380-teredo-tunneling-ipv6-over-udp-through-network-address-translations-nats</loc>
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    <loc>https://metasystema.org/rfc/4381-analysis-of-the-security-of-bgp-mpls-ip-virtual-private-networks-vpns</loc>
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    <loc>https://metasystema.org/rfc/4382-mpls-bgp-layer-3-virtual-private-network-vpn-management-information-base</loc>
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    <loc>https://metasystema.org/rfc/4384-bgp-communities-for-data-collection</loc>
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    <loc>https://metasystema.org/rfc/4385-pseudowire-emulation-edge-to-edge-pwe3-control-word-for-use-over-an-mpls-psn</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4386-internet-x-509-public-key-infrastructure-repository-locator-service</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4387-internet-x-509-public-key-infrastructure-operational-protocols-certificate-store</loc>
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    <loc>https://metasystema.org/rfc/4388-dynamic-host-configuration-protocol-dhcp-leasequery</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4389-neighbor-discovery-proxies-nd-proxy</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4390-dynamic-host-configuration-protocol-dhcp-over-infiniband</loc>
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    <loc>https://metasystema.org/rfc/4391-transmission-of-ip-over-infiniband-ipoib</loc>
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    <loc>https://metasystema.org/rfc/4392-ip-over-infiniband-ipoib-architecture</loc>
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    <loc>https://metasystema.org/rfc/4393-mime-type-registrations-for-3gpp2-multimedia-files</loc>
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    <loc>https://metasystema.org/rfc/4394-a-transport-network-view-of-the-link-management-protocol-lmp</loc>
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    <loc>https://metasystema.org/rfc/4395-guidelines-and-registration-procedures-for-new-uri-schemes</loc>
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    <loc>https://metasystema.org/rfc/4396-rtp-payload-format-for-3rd-generation-partnership-project-3gpp-timed-text</loc>
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    <loc>https://metasystema.org/rfc/4397-a-lexicography-for-the-interpretation-of-generalized-multiprotocol-label-switchi</loc>
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    <loc>https://metasystema.org/rfc/4398-storing-certificates-in-the-domain-name-system-dns</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4401-a-pseudo-random-function-prf-api-extension-for-the-generic-security-service-appl</loc>
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    <loc>https://metasystema.org/rfc/4402-a-pseudo-random-function-prf-for-the-kerberos-v-generic-security-service-applica</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4403-lightweight-directory-access-protocol-ldap-schema-for-universal-description-disc</loc>
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    <loc>https://metasystema.org/rfc/4404-definitions-of-managed-objects-for-fibre-channel-over-tcp-ip-fcip</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4405-smtp-service-extension-for-indicating-the-responsible-submitter-of-an-e-mail-mes</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4406-sender-id-authenticating-e-mail</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4407-purported-responsible-address-in-e-mail-messages</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4408-sender-policy-framework-spf-for-authorizing-use-of-domains-in-e-mail-version-1</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4409-message-submission-for-mail</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4410-selectively-reliable-multicast-protocol-srmp</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4411-extending-the-session-initiation-protocol-sip-reason-header-for-preemption-event</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4412-communications-resource-priority-for-the-session-initiation-protocol-sip</loc>
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    <loc>https://metasystema.org/rfc/4413-tcp-ip-field-behavior</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4414-an-enum-registry-type-for-the-internet-registry-information-service-iris</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4415-iana-registration-for-enumservice-voice</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4416-goals-for-internet-messaging-to-support-diverse-service-environments</loc>
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    <loc>https://metasystema.org/rfc/4417-report-of-the-2004-iab-messaging-workshop</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4418-umac-message-authentication-code-using-universal-hashing</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4419-diffie-hellman-group-exchange-for-the-secure-shell-ssh-transport-layer-protocol</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4420-encoding-of-attributes-for-multiprotocol-label-switching-mpls-label-switched-pat</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4421-rtp-payload-format-for-uncompressed-video-additional-colour-sampling-modes</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4422-simple-authentication-and-security-layer-sasl</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4423-host-identity-protocol-hip-architecture</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4424-real-time-transport-protocol-rtp-payload-format-for-the-variable-rate-multimode</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4425-rtp-payload-format-for-video-codec-1-vc-1</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4426-generalized-multi-protocol-label-switching-gmpls-recovery-functional-specificati</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4427-recovery-protection-and-restoration-terminology-for-generalized-multi-protocol-l</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4428-analysis-of-generalized-multi-protocol-label-switching-gmpls-based-recovery-mech</loc>
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    <loc>https://metasystema.org/rfc/4429-optimistic-duplicate-address-detection-dad-for-ipv6</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4430-kerberized-internet-negotiation-of-keys-kink</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4431-the-dnssec-lookaside-validation-dlv-dns-resource-record</loc>
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    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4432-rsa-key-exchange-for-the-secure-shell-ssh-transport-layer-protocol</loc>
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    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4433-mobile-ipv4-dynamic-home-agent-ha-assignment</loc>
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    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4434-the-aes-xcbc-prf-128-algorithm-for-the-internet-key-exchange-protocol-ike</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4435-a-framework-for-the-usage-of-internet-media-guides-imgs</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4436-detecting-network-attachment-in-ipv4-dnav4</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4437-web-distributed-authoring-and-versioning-webdav-redirect-reference-resources</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4438-fibre-channel-name-server-mib</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4439-fibre-channel-fabric-address-manager-mib</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4440-iab-thoughts-on-the-role-of-the-internet-research-task-force-irtf</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4441-the-ieee-802-ietf-relationship</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4442-bootstrapping-timed-efficient-stream-loss-tolerant-authentication-tesla</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4443-internet-control-message-protocol-icmpv6-for-the-internet-protocol-version-6-ipv</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4444-management-information-base-for-intermediate-system-to-intermediate-system-is-is</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4445-a-proposed-media-delivery-index-mdi</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4446-iana-allocations-for-pseudowire-edge-to-edge-emulation-pwe3</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4447-pseudowire-setup-and-maintenance-using-the-label-distribution-protocol-ldp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4448-encapsulation-methods-for-transport-of-ethernet-over-mpls-networks</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4449-securing-mobile-ipv6-route-optimization-using-a-static-shared-key</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4450-getting-rid-of-the-cruft-report-from-an-experiment-in-identifying-and-reclassify</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4451-bgp-multi-exit-disc-med-considerations</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4452-the-info-uri-scheme-for-information-assets-with-identifiers-in-public-namespaces</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4453-requirements-for-consent-based-communications-in-the-session-initiation-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4454-asynchronous-transfer-mode-atm-over-layer-2-tunneling-protocol-version-3-l2tpv3</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4455-definition-of-managed-objects-for-small-computer-system-interface-scsi-entities</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4456-bgp-route-reflection-an-alternative-to-full-mesh-internal-bgp-ibgp</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4457-the-session-initiation-protocol-sip-p-user-database-private-header-p-header</loc>
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    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4458-session-initiation-protocol-sip-uris-for-applications-such-as-voicemail-and-inte</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4459-mtu-and-fragmentation-issues-with-in-the-network-tunneling</loc>
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    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4460-stream-control-transmission-protocol-sctp-specification-errata-and-issues</loc>
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    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4461-signaling-requirements-for-point-to-multipoint-traffic-engineered-mpls-label-swi</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4462-generic-security-service-application-program-interface-gss-api-authentication-an</loc>
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    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4463-a-media-resource-control-protocol-mrcp-developed-by-cisco-nuance-and-speechworks</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4464-signaling-compression-sigcomp-users-guide</loc>
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    <loc>https://metasystema.org/rfc/4465-signaling-compression-sigcomp-torture-tests</loc>
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    <loc>https://metasystema.org/rfc/4466-collected-extensions-to-imap4-abnf</loc>
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    <loc>https://metasystema.org/rfc/4467-internet-message-access-protocol-imap-urlauth-extension</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4468-message-submission-burl-extension</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4469-internet-message-access-protocol-imap-catenate-extension</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4470-minimally-covering-nsec-records-and-dnssec-on-line-signing</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4471-derivation-of-dns-name-predecessor-and-successor</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4472-operational-considerations-and-issues-with-ipv6-dns</loc>
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    <loc>https://metasystema.org/rfc/4473-requirements-for-internet-media-guides-imgs</loc>
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    <loc>https://metasystema.org/rfc/4474-enhancements-for-authenticated-identity-management-in-the-session-initiation-pro</loc>
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    <loc>https://metasystema.org/rfc/4475-session-initiation-protocol-sip-torture-test-messages</loc>
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    <loc>https://metasystema.org/rfc/4476-attribute-certificate-ac-policies-extension</loc>
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    <loc>https://metasystema.org/rfc/4477-dynamic-host-configuration-protocol-dhcp-ipv4-and-ipv6-dual-stack-issues</loc>
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    <loc>https://metasystema.org/rfc/4478-repeated-authentication-in-internet-key-exchange-ikev2-protocol</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4479-a-data-model-for-presence</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4480-rpid-rich-presence-extensions-to-the-presence-information-data-format-pidf</loc>
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    <loc>https://metasystema.org/rfc/4481-timed-presence-extensions-to-the-presence-information-data-format-pidf-to-indica</loc>
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    <loc>https://metasystema.org/rfc/4482-cipid-contact-information-for-the-presence-information-data-format</loc>
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    <loc>https://metasystema.org/rfc/4483-a-mechanism-for-content-indirection-in-session-initiation-protocol-sip-messages</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4484-trait-based-authorization-requirements-for-the-session-initiation-protocol-sip</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4485-guidelines-for-authors-of-extensions-to-the-session-initiation-protocol-sip</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4486-subcodes-for-bgp-cease-notification-message</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4487-mobile-ipv6-and-firewalls-problem-statement</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4488-suppression-of-session-initiation-protocol-sip-refer-method-implicit-subscriptio</loc>
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    <loc>https://metasystema.org/rfc/4489-a-method-for-generating-link-scoped-ipv6-multicast-addresses</loc>
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    <loc>https://metasystema.org/rfc/4490-using-the-gost-28147-89-gost-r-34-11-94-gost-r-34-10-94-and-gost-r-34-10-2001-al</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4491-using-the-gost-r-34-10-94-gost-r-34-10-2001-and-gost-r-34-11-94-algorithms-with</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4492-elliptic-curve-cryptography-ecc-cipher-suites-for-transport-layer-security-tls</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4493-the-aes-cmac-algorithm</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4494-the-aes-cmac-96-algorithm-and-its-use-with-ipsec</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4495-a-resource-reservation-protocol-rsvp-extension-for-the-reduction-of-bandwidth-of</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4496-open-pluggable-edge-services-opes-smtp-use-cases</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4497-interworking-between-the-session-initiation-protocol-sip-and-qsig</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4498-the-managed-object-aggregation-mib</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4501-domain-name-system-uniform-resource-identifiers</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4502-remote-network-monitoring-management-information-base-version-2</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4503-a-description-of-the-rabbit-stream-cipher-algorithm</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4504-sip-telephony-device-requirements-and-configuration</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4505-anonymous-simple-authentication-and-security-layer-sasl-mechanism</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4506-xdr-external-data-representation-standard</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4507-transport-layer-security-tls-session-resumption-without-server-side-state</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4508-conveying-feature-tags-with-the-session-initiation-protocol-sip-refer-method</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4509-use-of-sha-256-in-dnssec-delegation-signer-ds-resource-records-rrs</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4510-lightweight-directory-access-protocol-ldap-technical-specification-road-map</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4511-lightweight-directory-access-protocol-ldap-the-protocol</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4512-lightweight-directory-access-protocol-ldap-directory-information-models</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4513-lightweight-directory-access-protocol-ldap-authentication-methods-and-security-m</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4514-lightweight-directory-access-protocol-ldap-string-representation-of-distinguishe</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4515-lightweight-directory-access-protocol-ldap-string-representation-of-search-filte</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4516-lightweight-directory-access-protocol-ldap-uniform-resource-locator</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4517-lightweight-directory-access-protocol-ldap-syntaxes-and-matching-rules</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4518-lightweight-directory-access-protocol-ldap-internationalized-string-preparation</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4519-lightweight-directory-access-protocol-ldap-schema-for-user-applications</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4520-internet-assigned-numbers-authority-iana-considerations-for-the-lightweight-dire</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4521-considerations-for-lightweight-directory-access-protocol-ldap-extensions</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4522-lightweight-directory-access-protocol-ldap-the-binary-encoding-option</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4523-lightweight-directory-access-protocol-ldap-schema-definitions-for-x-509-certific</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4524-cosine-ldap-x-500-schema</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4525-lightweight-directory-access-protocol-ldap-modify-increment-extension</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4526-lightweight-directory-access-protocol-ldap-absolute-true-and-false-filters</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4527-lightweight-directory-access-protocol-ldap-read-entry-controls</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4528-lightweight-directory-access-protocol-ldap-assertion-control</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4529-requesting-attributes-by-object-class-in-the-lightweight-directory-access-protoc</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4530-lightweight-directory-access-protocol-ldap-entryuuid-operational-attribute</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4531-lightweight-directory-access-protocol-ldap-turn-operation</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4532-lightweight-directory-access-protocol-ldap-who-am-i-operation</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4533-the-lightweight-directory-access-protocol-ldap-content-synchronization-operation</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4534-group-security-policy-token-v1</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4535-gsakmp-group-secure-association-key-management-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4536-the-application-smil-and-application-smil-xml-media-types</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4537-kerberos-cryptosystem-negotiation-extension</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4538-request-authorization-through-dialog-identification-in-the-session-initiation-pr</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4539-media-type-registration-for-the-society-of-motion-picture-and-television-enginee</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4540-nec-s-simple-middlebox-configuration-simco-protocol-version-3-0</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4541-considerations-for-internet-group-management-protocol-igmp-and-multicast-listene</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4542-implementing-an-emergency-telecommunications-service-ets-for-real-time-services</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4543-the-use-of-galois-message-authentication-code-gmac-in-ipsec-esp-and-ah</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4544-definitions-of-managed-objects-for-internet-small-computer-system-interface-iscs</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4545-definitions-of-managed-objects-for-ip-storage-user-identity-authorization</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4546-radio-frequency-rf-interface-management-information-base-for-data-over-cable-ser</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4547-event-notification-management-information-base-for-data-over-cable-service-inter</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4548-internet-code-point-icp-assignments-for-nsap-addresses</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4549-synchronization-operations-for-disconnected-imap4-clients</loc>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4550-internet-email-to-support-diverse-service-environments-lemonade-profile</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4551-imap-extension-for-conditional-store-operation-or-quick-flag-changes-resynchroni</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4552-authentication-confidentiality-for-ospfv3</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4553-structure-agnostic-time-division-multiplexing-tdm-over-packet-satop</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4554-use-of-vlans-for-ipv4-ipv6-coexistence-in-enterprise-networks</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4555-ikev2-mobility-and-multihoming-protocol-mobike</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4556-public-key-cryptography-for-initial-authentication-in-kerberos-pkinit</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4557-online-certificate-status-protocol-ocsp-support-for-public-key-cryptography-for</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4558-node-id-based-resource-reservation-protocol-rsvp-hello-a-clarification-statement</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4559-spnego-based-kerberos-and-ntlm-http-authentication-in-microsoft-windows</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4560-definitions-of-managed-objects-for-remote-ping-traceroute-and-lookup-operations</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4561-definition-of-a-record-route-object-rro-node-id-sub-object</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4562-mac-forced-forwarding-a-method-for-subscriber-separation-on-an-ethernet-access-n</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4563-the-key-id-information-type-for-the-general-extension-payload-in-multimedia-inte</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4564-objectives-for-control-and-provisioning-of-wireless-access-points-capwap</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4565-evaluation-of-candidate-control-and-provisioning-of-wireless-access-points-capwa</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4566-sdp-session-description-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4567-key-management-extensions-for-session-description-protocol-sdp-and-real-time-str</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4568-session-description-protocol-sdp-security-descriptions-for-media-streams</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4569-internet-assigned-number-authority-iana-registration-of-the-message-media-featur</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4570-session-description-protocol-sdp-source-filters</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4571-framing-real-time-transport-protocol-rtp-and-rtp-control-protocol-rtcp-packets-o</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4572-connection-oriented-media-transport-over-the-transport-layer-security-tls-protoc</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4573-mime-type-registration-for-rtp-payload-format-for-h-224</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4574-the-session-description-protocol-sdp-label-attribute</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4575-a-session-initiation-protocol-sip-event-package-for-conference-state</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4576-using-a-link-state-advertisement-lsa-options-bit-to-prevent-looping-in-bgp-mpls</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4577-ospf-as-the-provider-customer-edge-protocol-for-bgp-mpls-ip-virtual-private-netw</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4578-dynamic-host-configuration-protocol-dhcp-options-for-the-intel-preboot-execution</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4579-session-initiation-protocol-sip-call-control-conferencing-for-user-agents</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4580-dynamic-host-configuration-protocol-for-ipv6-dhcpv6-relay-agent-subscriber-id-op</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4581-cryptographically-generated-addresses-cga-extension-field-format</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4582-the-binary-floor-control-protocol-bfcp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4583-session-description-protocol-sdp-format-for-binary-floor-control-protocol-bfcp-s</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4584-extension-to-sockets-api-for-mobile-ipv6</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4585-extended-rtp-profile-for-real-time-transport-control-protocol-rtcp-based-feedbac</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4586-extended-rtp-profile-for-real-time-transport-control-protocol-rtcp-based-feedbac</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4587-rtp-payload-format-for-h-261-video-streams</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4588-rtp-retransmission-payload-format</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4589-location-types-registry</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4590-radius-extension-for-digest-authentication</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4591-frame-relay-over-layer-2-tunneling-protocol-version-3-l2tpv3</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4592-the-role-of-wildcards-in-the-domain-name-system</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4593-generic-threats-to-routing-protocols</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4594-configuration-guidelines-for-diffserv-service-classes</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4595-use-of-ikev2-in-the-fibre-channel-security-association-management-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4596-guidelines-for-usage-of-the-session-initiation-protocol-sip-caller-preferences-e</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4597-conferencing-scenarios</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4598-real-time-transport-protocol-rtp-payload-format-for-enhanced-ac-3-e-ac-3-audio</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4601-protocol-independent-multicast-sparse-mode-pim-sm-protocol-specification-revised</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4602-protocol-independent-multicast-sparse-mode-pim-sm-ietf-proposed-standard-require</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4603-additional-values-for-the-nas-port-type-attribute</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4604-using-internet-group-management-protocol-version-3-igmpv3-and-multicast-listener</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4605-internet-group-management-protocol-igmp-multicast-listener-discovery-mld-based-m</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4606-generalized-multi-protocol-label-switching-gmpls-extensions-for-synchronous-opti</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4607-source-specific-multicast-for-ip</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4608-source-specific-protocol-independent-multicast-in-232-8</loc>
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    <loc>https://metasystema.org/rfc/4609-protocol-independent-multicast-sparse-mode-pim-sm-multicast-routing-security-iss</loc>
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    <loc>https://metasystema.org/rfc/4610-anycast-rp-using-protocol-independent-multicast-pim</loc>
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    <loc>https://metasystema.org/rfc/4611-multicast-source-discovery-protocol-msdp-deployment-scenarios</loc>
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    <loc>https://metasystema.org/rfc/4612-real-time-facsimile-t-38-audio-t38-mime-sub-type-registration</loc>
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    <loc>https://metasystema.org/rfc/4613-media-type-registrations-for-downloadable-sounds-for-musical-instrument-digital</loc>
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    <loc>https://metasystema.org/rfc/4614-a-roadmap-for-transmission-control-protocol-tcp-specification-documents</loc>
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    <loc>https://metasystema.org/rfc/4615-the-advanced-encryption-standard-cipher-based-message-authentication-code-pseudo</loc>
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    <loc>https://metasystema.org/rfc/4616-the-plain-simple-authentication-and-security-layer-sasl-mechanism</loc>
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    <loc>https://metasystema.org/rfc/4617-a-uniform-resource-name-urn-formal-namespace-for-the-latvian-national-government</loc>
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    <loc>https://metasystema.org/rfc/4618-encapsulation-methods-for-transport-of-ppp-high-level-data-link-control-hdlc-ove</loc>
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    <loc>https://metasystema.org/rfc/4619-encapsulation-methods-for-transport-of-frame-relay-over-multiprotocol-label-swit</loc>
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    <loc>https://metasystema.org/rfc/4620-ipv6-node-information-queries</loc>
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    <loc>https://metasystema.org/rfc/4621-design-of-the-ikev2-mobility-and-multihoming-mobike-protocol</loc>
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    <loc>https://metasystema.org/rfc/4622-internationalized-resource-identifiers-iris-and-uniform-resource-identifiers-uri</loc>
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    <loc>https://metasystema.org/rfc/4623-pseudowire-emulation-edge-to-edge-pwe3-fragmentation-and-reassembly</loc>
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    <loc>https://metasystema.org/rfc/4624-multicast-source-discovery-protocol-msdp-mib</loc>
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    <loc>https://metasystema.org/rfc/4625-fibre-channel-routing-information-mib</loc>
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    <loc>https://metasystema.org/rfc/4626-mib-for-fibre-channel-s-fabric-shortest-path-first-fspf-protocol</loc>
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    <loc>https://metasystema.org/rfc/4627-the-application-json-media-type-for-javascript-object-notation-json</loc>
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    <loc>https://metasystema.org/rfc/4628-rtp-payload-format-for-h-263-moving-rfc-2190-to-historic-status</loc>
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    <loc>https://metasystema.org/rfc/4629-rtp-payload-format-for-itu-t-rec-h-263-video</loc>
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    <loc>https://metasystema.org/rfc/4630-update-to-directorystring-processing-in-the-internet-x-509-public-key-infrastruc</loc>
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    <loc>https://metasystema.org/rfc/4631-link-management-protocol-lmp-management-information-base-mib</loc>
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    <loc>https://metasystema.org/rfc/4632-classless-inter-domain-routing-cidr-the-internet-address-assignment-and-aggregat</loc>
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    <loc>https://metasystema.org/rfc/4634-us-secure-hash-algorithms-sha-and-hmac-sha</loc>
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    <loc>https://metasystema.org/rfc/4635-hmac-sha-hashed-message-authentication-code-secure-hash-algorithm-tsig-algorithm</loc>
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    <loc>https://metasystema.org/rfc/4636-foreign-agent-error-extension-for-mobile-ipv4</loc>
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    <loc>https://metasystema.org/rfc/4639-cable-device-management-information-base-for-data-over-cable-service-interface-s</loc>
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    <loc>https://metasystema.org/rfc/4641-dnssec-operational-practices</loc>
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    <loc>https://metasystema.org/rfc/4675-radius-attributes-for-virtual-lan-and-priority-support</loc>
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    <loc>https://metasystema.org/rfc/4688-a-uniform-resource-name-urn-namespace-for-aerospace-and-defence-industries-assoc</loc>
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    <loc>https://metasystema.org/rfc/4703-resolution-of-fully-qualified-domain-name-fqdn-conflicts-among-dynamic-host-conf</loc>
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    <loc>https://metasystema.org/rfc/4705-gigabeam-high-speed-radio-link-encryption</loc>
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    <loc>https://metasystema.org/rfc/4706-definitions-of-managed-objects-for-asymmetric-digital-subscriber-line-2-adsl2</loc>
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    <loc>https://metasystema.org/rfc/4707-netnews-administration-system-nas</loc>
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    <loc>https://metasystema.org/rfc/4710-real-time-application-quality-of-service-monitoring-raqmon-framework</loc>
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    <loc>https://metasystema.org/rfc/4711-real-time-application-quality-of-service-monitoring-raqmon-mib</loc>
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    <loc>https://metasystema.org/rfc/4712-transport-mappings-for-real-time-application-quality-of-service-monitoring-raqmo</loc>
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    <loc>https://metasystema.org/rfc/4713-registration-and-administration-recommendations-for-chinese-domain-names</loc>
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    <loc>https://metasystema.org/rfc/4714-requirements-for-ietf-technical-publication-service</loc>
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    <loc>https://metasystema.org/rfc/4715-the-integrated-services-digital-network-isdn-subaddress-encoding-type-for-tel-ur</loc>
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    <loc>https://metasystema.org/rfc/4716-the-secure-shell-ssh-public-key-file-format</loc>
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    <loc>https://metasystema.org/rfc/4717-encapsulation-methods-for-transport-of-asynchronous-transfer-mode-atm-over-mpls</loc>
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    <loc>https://metasystema.org/rfc/4718-ikev2-clarifications-and-implementation-guidelines</loc>
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    <loc>https://metasystema.org/rfc/4719-transport-of-ethernet-frames-over-layer-2-tunneling-protocol-version-3-l2tpv3</loc>
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    <loc>https://metasystema.org/rfc/4720-pseudowire-emulation-edge-to-edge-pwe3-frame-check-sequence-retention</loc>
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    <loc>https://metasystema.org/rfc/4721-mobile-ipv4-challenge-response-extensions-revised</loc>
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    <loc>https://metasystema.org/rfc/4722-media-server-control-markup-language-mscml-and-protocol</loc>
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    <loc>https://metasystema.org/rfc/4723-registration-of-media-type-audio-mobile-xmf</loc>
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    <loc>https://metasystema.org/rfc/4724-graceful-restart-mechanism-for-bgp</loc>
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    <loc>https://metasystema.org/rfc/4725-enum-validation-architecture</loc>
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    <loc>https://metasystema.org/rfc/4726-a-framework-for-inter-domain-multiprotocol-label-switching-traffic-engineering</loc>
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    <loc>https://metasystema.org/rfc/4727-experimental-values-in-ipv4-ipv6-icmpv4-icmpv6-udp-and-tcp-headers</loc>
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    <loc>https://metasystema.org/rfc/4728-the-dynamic-source-routing-protocol-dsr-for-mobile-ad-hoc-networks-for-ipv4</loc>
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    <loc>https://metasystema.org/rfc/4729-a-uniform-resource-name-urn-namespace-for-the-near-field-communication-nfc-forum</loc>
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    <loc>https://metasystema.org/rfc/4730-a-session-initiation-protocol-sip-event-package-for-key-press-stimulus-kpml</loc>
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    <loc>https://metasystema.org/rfc/4731-imap4-extension-to-search-command-for-controlling-what-kind-of-information-is-re</loc>
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    <loc>https://metasystema.org/rfc/4732-internet-denial-of-service-considerations</loc>
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    <loc>https://metasystema.org/rfc/4733-rtp-payload-for-dtmf-digits-telephony-tones-and-telephony-signals</loc>
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    <loc>https://metasystema.org/rfc/4734-definition-of-events-for-modem-fax-and-text-telephony-signals</loc>
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    <loc>https://metasystema.org/rfc/4735-example-media-types-for-use-in-documentation</loc>
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    <loc>https://metasystema.org/rfc/4736-reoptimization-of-multiprotocol-label-switching-mpls-traffic-engineering-te-loos</loc>
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    <loc>https://metasystema.org/rfc/4737-packet-reordering-metrics</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4738-mikey-rsa-r-an-additional-mode-of-key-distribution-in-multimedia-internet-keying</loc>
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    <loc>https://metasystema.org/rfc/4739-multiple-authentication-exchanges-in-the-internet-key-exchange-ikev2-protocol</loc>
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    <loc>https://metasystema.org/rfc/4740-diameter-session-initiation-protocol-sip-application</loc>
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    <loc>https://metasystema.org/rfc/4741-netconf-configuration-protocol</loc>
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    <loc>https://metasystema.org/rfc/4742-using-the-netconf-configuration-protocol-over-secure-shell-ssh</loc>
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    <loc>https://metasystema.org/rfc/4743-using-netconf-over-the-simple-object-access-protocol-soap</loc>
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    <loc>https://metasystema.org/rfc/4744-using-the-netconf-protocol-over-the-blocks-extensible-exchange-protocol-beep</loc>
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    <loc>https://metasystema.org/rfc/4745-common-policy-a-document-format-for-expressing-privacy-preferences</loc>
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    <loc>https://metasystema.org/rfc/4746-extensible-authentication-protocol-eap-password-authenticated-exchange</loc>
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    <loc>https://metasystema.org/rfc/4747-the-virtual-fabrics-mib</loc>
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    <loc>https://metasystema.org/rfc/4748-rfc-3978-update-to-recognize-the-ietf-trust</loc>
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    <loc>https://metasystema.org/rfc/4749-rtp-payload-format-for-the-g-729-1-audio-codec</loc>
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    <loc>https://metasystema.org/rfc/4750-ospf-version-2-management-information-base</loc>
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    <loc>https://metasystema.org/rfc/4752-the-kerberos-v5-gssapi-simple-authentication-and-security-layer-sasl-mechanism</loc>
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    <loc>https://metasystema.org/rfc/4753-ecp-groups-for-ike-and-ikev2</loc>
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    <loc>https://metasystema.org/rfc/4754-ike-and-ikev2-authentication-using-the-elliptic-curve-digital-signature-algorith</loc>
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    <loc>https://metasystema.org/rfc/4755-ip-over-infiniband-connected-mode</loc>
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    <loc>https://metasystema.org/rfc/4756-forward-error-correction-grouping-semantics-in-session-description-protocol</loc>
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    <loc>https://metasystema.org/rfc/4757-the-rc4-hmac-kerberos-encryption-types-used-by-microsoft-windows</loc>
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    <loc>https://metasystema.org/rfc/4758-cryptographic-token-key-initialization-protocol-ct-kip-version-1-0-revision-1</loc>
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    <loc>https://metasystema.org/rfc/4759-the-enum-dip-indicator-parameter-for-the-tel-uri</loc>
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    <loc>https://metasystema.org/rfc/4760-multiprotocol-extensions-for-bgp-4</loc>
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    <loc>https://metasystema.org/rfc/4761-virtual-private-lan-service-vpls-using-bgp-for-auto-discovery-and-signaling</loc>
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    <loc>https://metasystema.org/rfc/4762-virtual-private-lan-service-vpls-using-label-distribution-protocol-ldp-signaling</loc>
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    <loc>https://metasystema.org/rfc/4763-extensible-authentication-protocol-method-for-shared-secret-authentication-and-k</loc>
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    <loc>https://metasystema.org/rfc/4764-the-eap-psk-protocol-a-pre-shared-key-extensible-authentication-protocol-eap-met</loc>
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    <loc>https://metasystema.org/rfc/4765-the-intrusion-detection-message-exchange-format-idmef</loc>
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    <loc>https://metasystema.org/rfc/4766-intrusion-detection-message-exchange-requirements</loc>
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    <loc>https://metasystema.org/rfc/4767-the-intrusion-detection-exchange-protocol-idxp</loc>
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    <loc>https://metasystema.org/rfc/4768-desired-enhancements-to-generic-security-services-application-program-interface</loc>
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    <loc>https://metasystema.org/rfc/4769-iana-registration-for-an-enumservice-containing-public-switched-telephone-networ</loc>
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    <loc>https://metasystema.org/rfc/4770-vcard-extensions-for-instant-messaging-im</loc>
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    <loc>https://metasystema.org/rfc/4771-integrity-transform-carrying-roll-over-counter-for-the-secure-real-time-transpor</loc>
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    <loc>https://metasystema.org/rfc/4772-security-implications-of-using-the-data-encryption-standard-des</loc>
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    <loc>https://metasystema.org/rfc/4773-administration-of-the-iana-special-purpose-ipv6-address-block</loc>
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    <loc>https://metasystema.org/rfc/4774-specifying-alternate-semantics-for-the-explicit-congestion-notification-ecn-fiel</loc>
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    <loc>https://metasystema.org/rfc/4775-procedures-for-protocol-extensions-and-variations</loc>
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    <loc>https://metasystema.org/rfc/4776-dynamic-host-configuration-protocol-dhcpv4-and-dhcpv6-option-for-civic-addresses</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4777-ibm-s-iseries-telnet-enhancements</loc>
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    <loc>https://metasystema.org/rfc/4778-operational-security-current-practices-in-internet-service-provider-environments</loc>
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    <loc>https://metasystema.org/rfc/4779-isp-ipv6-deployment-scenarios-in-broadband-access-networks</loc>
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    <loc>https://metasystema.org/rfc/4780-management-information-base-for-the-session-initiation-protocol-sip</loc>
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    <loc>https://metasystema.org/rfc/4781-graceful-restart-mechanism-for-bgp-with-mpls</loc>
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    <loc>https://metasystema.org/rfc/4782-quick-start-for-tcp-and-ip</loc>
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    <loc>https://metasystema.org/rfc/4783-gmpls-communication-of-alarm-information</loc>
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    <loc>https://metasystema.org/rfc/4784-verizon-wireless-dynamic-mobile-ip-key-update-for-cdma2000-r-networks</loc>
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    <loc>https://metasystema.org/rfc/4785-pre-shared-key-psk-ciphersuites-with-null-encryption-for-transport-layer-securit</loc>
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    <loc>https://metasystema.org/rfc/4786-operation-of-anycast-services</loc>
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    <loc>https://metasystema.org/rfc/4787-network-address-translation-nat-behavioral-requirements-for-unicast-udp</loc>
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    <loc>https://metasystema.org/rfc/4788-enhancements-to-rtp-payload-formats-for-evrc-family-codecs</loc>
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    <loc>https://metasystema.org/rfc/4789-simple-network-management-protocol-snmp-over-ieee-802-networks</loc>
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    <loc>https://metasystema.org/rfc/4790-internet-application-protocol-collation-registry</loc>
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    <loc>https://metasystema.org/rfc/4791-calendaring-extensions-to-webdav-caldav</loc>
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    <loc>https://metasystema.org/rfc/4792-encoding-instructions-for-the-generic-string-encoding-rules-gser</loc>
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    <loc>https://metasystema.org/rfc/4793-the-eap-protected-one-time-password-protocol-eap-potp</loc>
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    <loc>https://metasystema.org/rfc/4794-rfc-1264-is-obsolete</loc>
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    <loc>https://metasystema.org/rfc/4795-link-local-multicast-name-resolution-llmnr</loc>
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    <loc>https://metasystema.org/rfc/4796-the-session-description-protocol-sdp-content-attribute</loc>
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    <loc>https://metasystema.org/rfc/4797-use-of-provider-edge-to-provider-edge-pe-pe-generic-routing-encapsulation-gre-or</loc>
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    <loc>https://metasystema.org/rfc/4798-connecting-ipv6-islands-over-ipv4-mpls-using-ipv6-provider-edge-routers-6pe</loc>
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    <loc>https://metasystema.org/rfc/4801-definitions-of-textual-conventions-for-generalized-multiprotocol-label-switching</loc>
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    <loc>https://metasystema.org/rfc/4802-generalized-multiprotocol-label-switching-gmpls-traffic-engineering-management-i</loc>
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    <loc>https://metasystema.org/rfc/4803-generalized-multiprotocol-label-switching-gmpls-label-switching-router-lsr-manag</loc>
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    <loc>https://metasystema.org/rfc/4805-definitions-of-managed-objects-for-the-ds1-j1-e1-ds2-and-e2-interface-types</loc>
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    <loc>https://metasystema.org/rfc/4806-online-certificate-status-protocol-ocsp-extensions-to-ikev2</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4807-ipsec-security-policy-database-configuration-mib</loc>
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    <loc>https://metasystema.org/rfc/4808-key-change-strategies-for-tcp-md5</loc>
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    <loc>https://metasystema.org/rfc/4809-requirements-for-an-ipsec-certificate-management-profile</loc>
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    <loc>https://metasystema.org/rfc/4810-long-term-archive-service-requirements</loc>
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    <loc>https://metasystema.org/rfc/4811-ospf-out-of-band-link-state-database-lsdb-resynchronization</loc>
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    <loc>https://metasystema.org/rfc/4812-ospf-restart-signaling</loc>
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    <loc>https://metasystema.org/rfc/4813-ospf-link-local-signaling</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4814-hash-and-stuffing-overlooked-factors-in-network-device-benchmarking</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4815-robust-header-compression-rohc-corrections-and-clarifications-to-rfc-3095</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4816-pseudowire-emulation-edge-to-edge-pwe3-asynchronous-transfer-mode-atm-transparen</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4817-encapsulation-of-mpls-over-layer-2-tunneling-protocol-version-3</loc>
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    <loc>https://metasystema.org/rfc/4818-radius-delegated-ipv6-prefix-attribute</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4819-secure-shell-public-key-subsystem</loc>
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    <loc>https://metasystema.org/rfc/4820-padding-chunk-and-parameter-for-the-stream-control-transmission-protocol-sctp</loc>
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    <loc>https://metasystema.org/rfc/4821-packetization-layer-path-mtu-discovery</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4822-ripv2-cryptographic-authentication</loc>
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    <loc>https://metasystema.org/rfc/4823-ftp-transport-for-secure-peer-to-peer-business-data-interchange-over-the-interne</loc>
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    <loc>https://metasystema.org/rfc/4824-the-transmission-of-ip-datagrams-over-the-semaphore-flag-signaling-system-sfss</loc>
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    <loc>https://metasystema.org/rfc/4825-the-extensible-markup-language-xml-configuration-access-protocol-xcap</loc>
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    <loc>https://metasystema.org/rfc/4826-extensible-markup-language-xml-formats-for-representing-resource-lists</loc>
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    <loc>https://metasystema.org/rfc/4827-an-extensible-markup-language-xml-configuration-access-protocol-xcap-usage-for-m</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4828-tcp-friendly-rate-control-tfrc-the-small-packet-sp-variant</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4829-label-switched-path-lsp-preemption-policies-for-mpls-traffic-engineering</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4830-problem-statement-for-network-based-localized-mobility-management-netlmm</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4831-goals-for-network-based-localized-mobility-management-netlmm</loc>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4832-security-threats-to-network-based-localized-mobility-management-netlmm</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4833-timezone-options-for-dhcp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4834-requirements-for-multicast-in-layer-3-provider-provisioned-virtual-private-netwo</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4835-cryptographic-algorithm-implementation-requirements-for-encapsulating-security-p</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4836-definitions-of-managed-objects-for-ieee-802-3-medium-attachment-units-maus</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4837-managed-objects-of-ethernet-passive-optical-networks-epon</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4838-delay-tolerant-networking-architecture</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4839-media-type-registrations-for-the-open-ebook-publication-structure-oebps-package</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4840-multiple-encapsulation-methods-considered-harmful</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4841-rfc-4181-update-to-recognize-the-ietf-trust</loc>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4842-synchronous-optical-network-synchronous-digital-hierarchy-sonet-sdh-circuit-emul</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4843-an-ipv6-prefix-for-overlay-routable-cryptographic-hash-identifiers-orchid</loc>
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  </url>
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    <loc>https://metasystema.org/rfc/4844-the-rfc-series-and-rfc-editor</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4845-process-for-publication-of-iab-rfcs</loc>
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    <loc>https://metasystema.org/rfc/4846-independent-submissions-to-the-rfc-editor</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4847-framework-and-requirements-for-layer-1-virtual-private-networks</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4848-domain-based-application-service-location-using-uris-and-the-dynamic-delegation</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4849-radius-filter-rule-attribute</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4850-declarative-public-extension-key-for-internet-small-computer-systems-interface-i</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4851-the-flexible-authentication-via-secure-tunneling-extensible-authentication-proto</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4852-ipv6-enterprise-network-analysis-ip-layer-3-focus</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4853-cryptographic-message-syntax-cms-multiple-signer-clarification</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4854-a-uniform-resource-name-urn-namespace-for-extensions-to-the-extensible-messaging</loc>
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    <loc>https://metasystema.org/rfc/4855-media-type-registration-of-rtp-payload-formats</loc>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4856-media-type-registration-of-payload-formats-in-the-rtp-profile-for-audio-and-vide</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4857-mobile-ipv4-regional-registration</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4858-document-shepherding-from-working-group-last-call-to-publication</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4859-codepoint-registry-for-the-flags-field-in-the-resource-reservation-protocol-traf</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4860-generic-aggregate-resource-reservation-protocol-rsvp-reservations</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4861-neighbor-discovery-for-ip-version-6-ipv6</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4862-ipv6-stateless-address-autoconfiguration</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4863-wildcard-pseudowire-type</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4864-local-network-protection-for-ipv6</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4865-smtp-submission-service-extension-for-future-message-release</loc>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4866-enhanced-route-optimization-for-mobile-ipv6</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4867-rtp-payload-format-and-file-storage-format-for-the-adaptive-multi-rate-amr-and-a</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4868-using-hmac-sha-256-hmac-sha-384-and-hmac-sha-512-with-ipsec</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4869-suite-b-cryptographic-suites-for-ipsec</loc>
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    <loc>https://metasystema.org/rfc/4870-domain-based-email-authentication-using-public-keys-advertised-in-the-dns-domain</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4871-domainkeys-identified-mail-dkim-signatures</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4872-rsvp-te-extensions-in-support-of-end-to-end-generalized-multi-protocol-label-swi</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4873-gmpls-segment-recovery</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4874-exclude-routes-extension-to-resource-reservation-protocol-traffic-engineering-rs</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4875-extensions-to-resource-reservation-protocol-traffic-engineering-rsvp-te-for-poin</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4876-a-configuration-profile-schema-for-lightweight-directory-access-protocol-ldap-ba</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4877-mobile-ipv6-operation-with-ikev2-and-the-revised-ipsec-architecture</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4878-definitions-and-managed-objects-for-operations-administration-and-maintenance-oa</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4879-clarification-of-the-third-party-disclosure-procedure-in-rfc-3979</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4880-openpgp-message-format</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4881-low-latency-handoffs-in-mobile-ipv4</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4882-ip-address-location-privacy-and-mobile-ipv6-problem-statement</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4883-benchmarking-terminology-for-resource-reservation-capable-routers</loc>
    <changefreq>yearly</changefreq>
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  </url>
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    <loc>https://metasystema.org/rfc/4884-extended-icmp-to-support-multi-part-messages</loc>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4885-network-mobility-support-terminology</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4886-network-mobility-support-goals-and-requirements</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4887-network-mobility-home-network-models</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4888-network-mobility-route-optimization-problem-statement</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4889-network-mobility-route-optimization-solution-space-analysis</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4890-recommendations-for-filtering-icmpv6-messages-in-firewalls</loc>
    <changefreq>yearly</changefreq>
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  </url>
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    <loc>https://metasystema.org/rfc/4891-using-ipsec-to-secure-ipv6-in-ipv4-tunnels</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4892-requirements-for-a-mechanism-identifying-a-name-server-instance</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4893-bgp-support-for-four-octet-as-number-space</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4894-use-of-hash-algorithms-in-internet-key-exchange-ike-and-ipsec</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4895-authenticated-chunks-for-the-stream-control-transmission-protocol-sctp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4896-signaling-compression-sigcomp-corrections-and-clarifications</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4897-handling-normative-references-to-standards-track-documents</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4898-tcp-extended-statistics-mib</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4901-protocol-extensions-for-header-compression-over-mpls</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4902-integrity-privacy-and-security-in-open-pluggable-edge-services-opes-for-smtp</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4903-multi-link-subnet-issues</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4904-representing-trunk-groups-in-tel-sip-uniform-resource-identifiers-uris</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4905-encapsulation-methods-for-transport-of-layer-2-frames-over-mpls-networks</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4906-transport-of-layer-2-frames-over-mpls</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4907-architectural-implications-of-link-indications</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4908-multi-homing-for-small-scale-fixed-network-using-mobile-ip-and-nemo</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4909-multimedia-internet-keying-mikey-general-extension-payload-for-open-mobile-allia</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4910-robust-xml-encoding-rules-rxer-for-abstract-syntax-notation-one-asn-1</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4911-encoding-instructions-for-the-robust-xml-encoding-rules-rxer</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4912-abstract-syntax-notation-x-asn-x</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4913-abstract-syntax-notation-x-asn-x-representation-of-encoding-instructions-for-the</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4914-abstract-syntax-notation-x-asn-x-representation-of-encoding-instructions-for-the</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4915-multi-topology-mt-routing-in-ospf</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4916-connected-identity-in-the-session-initiation-protocol-sip</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4917-mobile-ipv4-message-string-extension</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4918-http-extensions-for-web-distributed-authoring-and-versioning-webdav</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4919-ipv6-over-low-power-wireless-personal-area-networks-6lowpans-overview-assumption</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4920-crankback-signaling-extensions-for-mpls-and-gmpls-rsvp-te</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4923-quality-of-service-qos-signaling-in-a-nested-virtual-private-network</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4924-reflections-on-internet-transparency</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4925-softwire-problem-statement</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4926-a-urn-namespace-for-geant</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4927-path-computation-element-communication-protocol-pcecp-specific-requirements-for</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4928-avoiding-equal-cost-multipath-treatment-in-mpls-networks</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4929-change-process-for-multiprotocol-label-switching-mpls-and-generalized-mpls-gmpls</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4930-extensible-provisioning-protocol-epp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4931-extensible-provisioning-protocol-epp-domain-name-mapping</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4932-extensible-provisioning-protocol-epp-host-mapping</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4933-extensible-provisioning-protocol-epp-contact-mapping</loc>
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    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4934-extensible-provisioning-protocol-epp-transport-over-tcp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4935-fibre-channel-fabric-configuration-server-mib</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4936-fibre-channel-zone-server-mib</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4937-iana-considerations-for-ppp-over-ethernet-pppoe</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4938-ppp-over-ethernet-pppoe-extensions-for-credit-flow-and-link-metrics</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4939-definitions-of-managed-objects-for-isns-internet-storage-name-service</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4940-iana-considerations-for-ospf</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4941-privacy-extensions-for-stateless-address-autoconfiguration-in-ipv6</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4942-ipv6-transition-co-existence-security-considerations</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4943-ipv6-neighbor-discovery-on-link-assumption-considered-harmful</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4944-transmission-of-ipv6-packets-over-ieee-802-15-4-networks</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4945-the-internet-ip-security-pki-profile-of-ikev1-isakmp-ikev2-and-pkix</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4946-atom-license-extension</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4947-address-resolution-mechanisms-for-ip-datagrams-over-mpeg-2-networks</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4948-report-from-the-iab-workshop-on-unwanted-traffic-march-9-10-2006</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4949-internet-security-glossary-version-2</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4950-icmp-extensions-for-multiprotocol-label-switching</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4951-fail-over-extensions-for-layer-2-tunneling-protocol-l2tp-failover</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4952-overview-and-framework-for-internationalized-email</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4953-defending-tcp-against-spoofing-attacks</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4954-smtp-service-extension-for-authentication</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4955-dns-security-dnssec-experiments</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4956-dns-security-dnssec-opt-in</loc>
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  <url>
    <loc>https://metasystema.org/rfc/4957-link-layer-event-notifications-for-detecting-network-attachments</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4958-a-framework-for-supporting-emergency-telecommunications-services-ets-within-a-si</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4959-imap-extension-for-simple-authentication-and-security-layer-sasl-initial-client</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4960-stream-control-transmission-protocol</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/4961-symmetric-rtp-rtp-control-protocol-rtcp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4962-guidance-for-authentication-authorization-and-accounting-aaa-key-management</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4963-ipv4-reassembly-errors-at-high-data-rates</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4964-the-p-answer-state-header-extension-to-the-session-initiation-protocol-for-the-o</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4965-cablelabs-ietf-standardization-collaboration</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4966-reasons-to-move-the-network-address-translator-protocol-translator-nat-pt-to-his</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4967-dial-string-parameter-for-the-session-initiation-protocol-uniform-resource-ident</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4968-analysis-of-ipv6-link-models-for-802-16-based-networks</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4969-iana-registration-for-vcard-enumservice</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4970-extensions-to-ospf-for-advertising-optional-router-capabilities</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4971-intermediate-system-to-intermediate-system-is-is-extensions-for-advertising-rout</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4972-routing-extensions-for-discovery-of-multiprotocol-mpls-label-switch-router-lsr-t</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4973-ospf-xte-experimental-extension-to-ospf-for-traffic-engineering</loc>
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    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4974-generalized-mpls-gmpls-rsvp-te-signaling-extensions-in-support-of-calls</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4975-the-message-session-relay-protocol-msrp</loc>
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    <loc>https://metasystema.org/rfc/4976-relay-extensions-for-the-message-sessions-relay-protocol-msrp</loc>
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    <loc>https://metasystema.org/rfc/4977-problem-statement-dual-stack-mobility</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4978-the-imap-compress-extension</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4979-iana-registration-for-enumservice-xmpp</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4980-analysis-of-multihoming-in-network-mobility-support</loc>
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    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4981-survey-of-research-towards-robust-peer-to-peer-networks-search-methods</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/4982-support-for-multiple-hash-algorithms-in-cryptographically-generated-addresses-cg</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4983-fibre-channel-registered-state-change-notification-rscn-mib</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4984-report-from-the-iab-workshop-on-routing-and-addressing</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/4985-internet-x-509-public-key-infrastructure-subject-alternative-name-for-expression</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4986-requirements-related-to-dns-security-dnssec-trust-anchor-rollover</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4987-tcp-syn-flooding-attacks-and-common-mitigations</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4988-mobile-ipv4-fast-handovers</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4990-use-of-addresses-in-generalized-multiprotocol-label-switching-gmpls-networks</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4991-a-common-schema-for-internet-registry-information-service-transfer-protocols</loc>
    <changefreq>yearly</changefreq>
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  </url>
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    <loc>https://metasystema.org/rfc/4992-xml-pipelining-with-chunks-for-the-internet-registry-information-service</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4993-a-lightweight-udp-transfer-protocol-for-the-internet-registry-information-servic</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4994-dhcpv6-relay-agent-echo-request-option</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/4995-the-robust-header-compression-rohc-framework</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/4996-robust-header-compression-rohc-a-profile-for-tcp-ip-rohc-tcp</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/4997-formal-notation-for-robust-header-compression-rohc-fn</loc>
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    <loc>https://metasystema.org/rfc/4998-evidence-record-syntax-ers</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5000-internet-official-protocol-standards</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/5001-dns-name-server-identifier-nsid-option</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5002-the-session-initiation-protocol-sip-p-profile-key-private-header-p-header</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5003-attachment-individual-identifier-aii-types-for-aggregation</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5004-avoid-bgp-best-path-transitions-from-one-external-to-another</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5005-feed-paging-and-archiving</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5006-ipv6-router-advertisement-option-for-dns-configuration</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5007-dhcpv6-leasequery</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5008-suite-b-in-secure-multipurpose-internet-mail-extensions-s-mime</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/5009-private-header-p-header-extension-to-the-session-initiation-protocol-sip-for-aut</loc>
    <changefreq>yearly</changefreq>
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    <loc>https://metasystema.org/rfc/5010-the-dynamic-host-configuration-protocol-version-4-dhcpv4-relay-agent-flags-subop</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5011-automated-updates-of-dns-security-dnssec-trust-anchors</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5012-requirements-for-emergency-context-resolution-with-internet-technologies</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5013-the-dublin-core-metadata-element-set</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5014-ipv6-socket-api-for-source-address-selection</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5015-bidirectional-protocol-independent-multicast-bidir-pim</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5016-requirements-for-a-domainkeys-identified-mail-dkim-signing-practices-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5017-mib-textual-conventions-for-uniform-resource-identifiers-uris</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5018-connection-establishment-in-the-binary-floor-control-protocol-bfcp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5019-the-lightweight-online-certificate-status-protocol-ocsp-profile-for-high-volume</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5020-the-lightweight-directory-access-protocol-ldap-entrydn-operational-attribute</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5021-extended-kerberos-version-5-key-distribution-center-kdc-exchanges-over-tcp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5022-media-server-control-markup-language-mscml-and-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5023-the-atom-publishing-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5024-odette-file-transfer-protocol-2-0</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5025-presence-authorization-rules</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5026-mobile-ipv6-bootstrapping-in-split-scenario</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5027-security-preconditions-for-session-description-protocol-sdp-media-streams</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5028-a-telephone-number-mapping-enum-service-registration-for-instant-messaging-im-se</loc>
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    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5029-definition-of-an-is-is-link-attribute-sub-tlv</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5030-mobile-ipv4-radius-requirements</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5031-a-uniform-resource-name-urn-for-emergency-and-other-well-known-services</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5032-within-search-extension-to-the-imap-protocol</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5033-specifying-new-congestion-control-algorithms</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5034-the-post-office-protocol-pop3-simple-authentication-and-security-layer-sasl-auth</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5035-enhanced-security-services-ess-update-adding-certid-algorithm-agility</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5036-ldp-specification</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5037-experience-with-the-label-distribution-protocol-ldp</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5038-the-label-distribution-protocol-ldp-implementation-survey-results</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5039-the-session-initiation-protocol-sip-and-spam</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5040-a-remote-direct-memory-access-protocol-specification</loc>
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  <url>
    <loc>https://metasystema.org/rfc/5041-direct-data-placement-over-reliable-transports</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5042-direct-data-placement-protocol-ddp-remote-direct-memory-access-protocol-rdmap-se</loc>
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    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5043-stream-control-transmission-protocol-sctp-direct-data-placement-ddp-adaptation</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5044-marker-pdu-aligned-framing-for-tcp-specification</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5045-applicability-of-remote-direct-memory-access-protocol-rdma-and-direct-data-place</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5046-internet-small-computer-system-interface-iscsi-extensions-for-remote-direct-memo</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5047-da-datamover-architecture-for-the-internet-small-computer-system-interface-iscsi</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
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    <loc>https://metasystema.org/rfc/5048-internet-small-computer-system-interface-iscsi-corrections-and-clarifications</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5049-applying-signaling-compression-sigcomp-to-the-session-initiation-protocol-sip</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5050-bundle-protocol-specification</loc>
    <changefreq>yearly</changefreq>
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  <url>
    <loc>https://metasystema.org/rfc/5051-i-unicode-casemap-simple-unicode-collation-algorithm</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5052-forward-error-correction-fec-building-block</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5053-raptor-forward-error-correction-scheme-for-object-delivery</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5054-using-the-secure-remote-password-srp-protocol-for-tls-authentication</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5055-server-based-certificate-validation-protocol-scvp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5056-on-the-use-of-channel-bindings-to-secure-channels</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5057-multiple-dialog-usages-in-the-session-initiation-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5058-explicit-multicast-xcast-concepts-and-options</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5059-bootstrap-router-bsr-mechanism-for-protocol-independent-multicast-pim</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5060-protocol-independent-multicast-mib</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5061-stream-control-transmission-protocol-sctp-dynamic-address-reconfiguration</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5062-security-attacks-found-against-the-stream-control-transmission-protocol-sctp-and</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5063-extensions-to-gmpls-resource-reservation-protocol-rsvp-graceful-restart</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5064-the-archived-at-message-header-field</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5065-autonomous-system-confederations-for-bgp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5066-ethernet-in-the-first-mile-copper-efmcu-interfaces-mib</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5067-infrastructure-enum-requirements</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5068-email-submission-operations-access-and-accountability-requirements</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5069-security-threats-and-requirements-for-emergency-call-marking-and-mapping</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5070-the-incident-object-description-exchange-format</loc>
    <changefreq>yearly</changefreq>
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  </url>
  <url>
    <loc>https://metasystema.org/rfc/5071-dynamic-host-configuration-protocol-options-used-by-pxelinux</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5072-ip-version-6-over-ppp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5073-igp-routing-protocol-extensions-for-discovery-of-traffic-engineering-node-capabi</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5074-dnssec-lookaside-validation-dlv</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5075-ipv6-router-advertisement-flags-option</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5076-enum-validation-information-mapping-for-the-extensible-provisioning-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5077-transport-layer-security-tls-session-resumption-without-server-side-state</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5078-iab-and-iesg-selection-confirmation-and-recall-process-revision-of-the-nominatin</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5079-rejecting-anonymous-requests-in-the-session-initiation-protocol-sip</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5080-common-remote-authentication-dial-in-user-service-radius-implementation-issues-a</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5081-using-openpgp-keys-for-transport-layer-security-tls-authentication</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5082-the-generalized-ttl-security-mechanism-gtsm</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5083-cryptographic-message-syntax-cms-authenticated-enveloped-data-content-type</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5084-using-aes-ccm-and-aes-gcm-authenticated-encryption-in-the-cryptographic-message</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5085-pseudowire-virtual-circuit-connectivity-verification-vccv-a-control-channel-for</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5086-structure-aware-time-division-multiplexed-tdm-circuit-emulation-service-over-pac</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5087-time-division-multiplexing-over-ip-tdmoip</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5088-ospf-protocol-extensions-for-path-computation-element-pce-discovery</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5089-is-is-protocol-extensions-for-path-computation-element-pce-discovery</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5090-radius-extension-for-digest-authentication</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5091-identity-based-cryptography-standard-ibcs-1-supersingular-curve-implementations</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5092-imap-url-scheme</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5093-bt-s-extended-network-quality-rtp-control-protocol-extended-reports-rtcp-xr-xnq</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5094-mobile-ipv6-vendor-specific-option</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5095-deprecation-of-type-0-routing-headers-in-ipv6</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5096-mobile-ipv6-experimental-messages</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5097-mib-for-the-udp-lite-protocol</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5098-signaling-mib-for-packetcable-and-ipcablecom-multimedia-terminal-adapters-mtas</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5101-specification-of-the-ip-flow-information-export-ipfix-protocol-for-the-exchange</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5102-information-model-for-ip-flow-information-export</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5103-bidirectional-flow-export-using-ip-flow-information-export-ipfix</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5104-codec-control-messages-in-the-rtp-audio-visual-profile-with-feedback-avpf</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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    <loc>https://metasystema.org/rfc/5105-enum-validation-token-format-definition</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5106-the-extensible-authentication-protocol-internet-key-exchange-protocol-version-2</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5107-dhcp-server-identifier-override-suboption</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5109-rtp-payload-format-for-generic-forward-error-correction</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5110-overview-of-the-internet-multicast-routing-architecture</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5111-experiment-in-exploratory-group-formation-within-the-internet-engineering-task-f</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5112-the-presence-specific-static-dictionary-for-signaling-compression-sigcomp</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5113-network-discovery-and-selection-problem</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5114-additional-diffie-hellman-groups-for-use-with-ietf-standards</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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  <url>
    <loc>https://metasystema.org/rfc/5115-telephony-routing-over-ip-trip-attribute-for-resource-priority</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5116-an-interface-and-algorithms-for-authenticated-encryption</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5117-rtp-topologies</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5118-session-initiation-protocol-sip-torture-test-messages-for-internet-protocol-vers</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://metasystema.org/rfc/5119-a-uniform-resource-name-urn-namespace-for-the-society-of-motion-picture-and-tele</loc>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
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