Last Call Review of draft-ietf-6man-rfc6724-update-18
review-ietf-6man-rfc6724-update-18-secdir-lc-smith-2025-03-18-00

Request Review of draft-ietf-6man-rfc6724-update
Requested revision No specific revision (document currently at 25)
Type IETF Last Call Review
Team Security Area Directorate (secdir)
Deadline 2025-04-02
Requested 2025-03-12
Authors Nick Buraglio , Tim Chown , Jeremy Duncan
I-D last updated 2026-07-06 (Latest revision 2025-08-11)
Completed reviews Tsvart IETF Last Call review of -18 by Michael Tüxen (diff)
Dnsdir IETF Last Call review of -18 by Vladimír Čunát (diff)
Opsdir IETF Last Call review of -19 by Niclas Comstedt (diff)
Genart IETF Last Call review of -18 by Elwyn B. Davies (diff)
Secdir IETF Last Call review of -18 by Ned Smith (diff)
Dnsdir Telechat review of -20 by Jim Reid (diff)
Intdir Telechat review of -23 by Timothy Winters (diff)
Dnsdir Telechat review of -21 by Jim Reid (diff)
Dnsdir Telechat review of -22 by Jim Reid (diff)
Assignment Reviewer Ned Smith
State Completed
Request IETF Last Call review on draft-ietf-6man-rfc6724-update by Security Area Directorate Assigned
Posted at https://mailarchive.ietf.org/arch/msg/secdir/zJ-oWMaH2j_22bxFc_RRbrrDSi0
Reviewed revision 18 (document currently at 25)
Result Ready
Completed 2025-03-18
review-ietf-6man-rfc6724-update-18-secdir-lc-smith-2025-03-18-00
The update to RFC6724 adjusts the IP address selection precedence to favor IPv6
global unicast and unique local addresses above IPv4 addresses. It demotes the
6to4 tunneling option reflecting the decreased reliance on IPv4 deployments. It
also makes rule 5.5 mandatory which prefers addresses in a prefix advertised by
next-hop routers.

I found no significant issues. I had a couple of questions related to word
choice. The authors or other reviewers may determine whether they are
significant enough to make a change.

Introduction:
        - 4th paragraph: Wording seems awkward:
                S/a label that differs to general ULA prefixes/a label that
                differs from general ULA prefixes/ OR S/a label that differs to
                general ULA prefixes/a label that defers to general ULA
                prefixes/

Section 5.3:
        - S/how the learnt known-local/how the learned known-local/
                I couldn't find "learnt" in a US English dictionary.