RFC 9664: An EDNS(0) Option to Negotiate Leases on DNS Updates
Recent RFCs 2025-06-12
Summary:
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.