I-D Action: draft-ietf-6man-rfc6724-update-24.txt

Internet-Draft draft-ietf-6man-rfc6724-update-24.txt is now available. It is a
work item of the IPv6 Maintenance (6MAN) WG of the IETF.

   Title:   Prioritizing known-local IPv6 ULAs through address selection policy
   Authors: Nick Buraglio
            Tim Chown
            Jeremy Duncan
   Name:    draft-ietf-6man-rfc6724-update-24.txt
   Pages:   21
   Dates:   2025-08-11

Abstract:

   This document updates the default address selection algorithm for
   Internet Protocol Version 6 (IPv6), originally specified in RFC 6724,
   based on accumulated operational experience.  It introduces the
   concept of "known-local" Unique Local Address (ULA) prefixes within
   the fd00::/8 block and specifies that ULA-to-ULA communications using
   such prefixes should be preferred over both IPv4-to-IPv4 and GUA-to-
   GUA (Global Unicast Address) communications in local use scenarios.
   The document defines mechanisms for nodes to identify and incorporate
   known-local prefixes into their address selection policy tables.  It
   introduces a requirement to implement Rule 5.5 of RFC 6724 and
   reduces the default precedence for 6to4 addresses.  These updates
   enhance the supportability of typical deployment environments,
   including automatic and unmanaged configurations, and promote
   consistent IPv6-over-IPv4 precedence behavior for both ULA and GUA
   within local networks.  The document acknowledges that certain
   atypical deployment models may require explicit configuration to
   achieve intended operational outcomes.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-6man-rfc6724-update/

There is also an HTMLized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-6man-rfc6724-update-24

A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-6man-rfc6724-update-24

Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts


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