I-D Action: draft-ietf-6man-rfc6724-update-20.txt

Internet-Draft draft-ietf-6man-rfc6724-update-20.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-20.txt
   Pages:   21
   Dates:   2025-05-13

Abstract:

   This document draws on several years of operational experience to
   update the recommended process of Default Address Selection for
   Internet Protocol Version 6 (IPv6) defined in RFC6724, defining the
   concept of "known-local" Unique Local Address (ULA) prefixes that
   enable ULA-to-ULA communications within fd00::/8 to become preferred
   over both IPv4-IPv4 and GUA-to-GUA (Global Unicast Addresses) for
   local use.  The document defines the means by which nodes can both
   identify and insert such prefixes into their address selection policy
   table.  It also clarifies the mandatory, unconditional requirement
   for support for Rule 5.5 defined in Section 5 of RFC6724 and demotes
   the preference for 6to4 addresses.  These changes to default behavior
   improve supportability of common use cases, including automatic /
   unmanaged scenarios, and makes preference for IPv6 over IPv4
   consistent in local site networks for both ULA and GUA prefixes.  It
   is recognized that some less common deployment scenarios may require
   explicit configuration or custom changes to achieve desired
   operational parameters.

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-20

A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-6man-rfc6724-update-20

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


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