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RFC 9664: An EDNS(0) Option to Negotiate Leases on DNS Updates

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

This document describes an EDNS(0) option that can be used between DNS Update Requesters and authoritative DNS servers to include a lifetime (lease duration) in a DNS Update or DNS Update Response, allowing a server to garbage collect stale Resource Records that have been added by DNS Updates if they are not renewed.

Document record

Document ID
RFC9664
Published
June 2025
Authors
S. Cheshire; T. Lemon
Status
PROPOSED STANDARD
Stream
IETF
Area
int
Pages
12
Also known as
—

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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.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

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canonical URL: /rfc/9664-an-edns-0-option-to-negotiate-leases-on-dns-updates