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RFC 9853: Return Routability Check for DTLS 1.2 and 1.3

In plain English — editorial summary, not part of the RFC

This document specifies a Return Routability Check (RRC) subprotocol for use in the context of the Connection ID (CID) construct for the Datagram Transport Layer Security (DTLS) protocol versions 1.2 and 1.3. Implementations offering the CID functionality described in RFCs 9146 and 9147 are encouraged to also provide the RRC functionality described in this document. For this reason, this document updates RFCs 9146 and 9147.

Document record

Document ID
RFC9853
Published
March 2026
Authors
H. Tschofenig; A. Kraus; T. Fossati
Status
PROPOSED STANDARD
Stream
IETF
Area
sec
Pages
22
Also known as
—
Updates:
RFC 9146, RFC 9147

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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