Hi Magnus,
(Adding v6ops/authors to easily track this review)
Thanks for the review and connecting the “dots”. A side note, the masque dns work you cited has to be connected to the DNR/IKE work done by
the ADD/IPSECME WGs.
Cheers,
Med
De : Magnus Westerlund <magnus.westerlund=40ericsson.com@xxxxxxxxxxxxxx>
Envoyé : mercredi 16 juillet 2025 14:24
À : tsv-art@xxxxxxxx; last-call@xxxxxxxx
Objet : [Last-Call] FW: [Masque] draft-ietf-v6ops-prefer8781-04 ietf last call Tsvart review
Document: draft-ietf-v6ops-prefer8781
Title: Recommendations for Discovering IPv6 Prefix Used for IPv6 Address
Synthesis Reviewer: Magnus Westerlund Review result: Ready
Having reviewed this document while going back to determine if I had made an
error in triaging it for TSV-ART. I realized that I could send out my result
and also inform Masque WG about a potential concern.
So I think the document is ready for publication and have no obvious and
significant transport impact. So I think no changes are needed.
The one thought worth noting here between this document and activities in WIT
area is how this idea interacts with Connect-IP HTTP tunneling done in MASQUE
WG. It also indicates an general issue for Connect-IP, and which it is noting
in Section 7.1 of RFC 9484 (https://www.rfc-editor.org/rfc/rfc9484.html#name-link-operation). Namely that
Connect-IP is not a link layer and doesn't have a way of carrying RAs. Thus,
the pref64 info can't be carried currently. Instead it likely needs a dedicated
extension, just like what is being done for configuring DNS: https://datatracker.ietf.org/doc/draft-ietf-masque-connect-ip-dns/
If the private IP network one is connecting to (with Connect-IP) is using NAT64
and the IP endpoint needs the configuration it needs to get it from a DNS, and
one that is associated with this network too. Which thus would require at least
the above extension to work at all.
I think the HTTP Tunneling properties are such that it's future and/or updated
specs are the ones that should take note of this general recommendation, rather
than the general recommendation needing to note the special case of Connect-IP.
Cheers
Magnus Westerlund
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