[Detnet] Éric Vyncke's No Objection on draft-ietf-detnet-mpls-over-ip-preof-10: (with COMMENT)

Éric Vyncke via Datatracker <noreply@ietf.org> Wed, 21 February 2024 08:09 UTC

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Subject: [Detnet] Éric Vyncke's No Objection on draft-ietf-detnet-mpls-over-ip-preof-10: (with COMMENT)
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Éric Vyncke has entered the following ballot position for
draft-ietf-detnet-mpls-over-ip-preof-10: No Objection

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# Éric Vyncke, INT AD, comments for draft-ietf-detnet-mpls-over-ip-preof-10

Thank you for the work put into this document. I always find DetNet work
interesting and useful.

Please find below some non-blocking COMMENT points (but replies would be
appreciated even if only for my own education), and some nits.

Special thanks to Lou Berger for the shepherd's detailed write-up including the
WG consensus and the justification of the intended status (the latter could
have been more detailed tough).

Other thanks to Tatuya Jinmei, the Internet directorate reviewer (at my
request), please consider this int-dir review:
(thanks to Balázs for his reply)

I hope that this review helps to improve the document,



# COMMENTS (non-blocking)

## Is MPLS over UDP the only solution ?

While using MPLS over UDP is indeed a valid solution for sequencing the
packets, I wonder whether RFC 8939 could have been updated/extended to also add
ordering, this would probably have less overhead. Was this discussed in the WG?
If so, why not adding this justification in the draft ? (note I may have missed
something obvious :-O )

## Section 5

`IPv6 next header field set to "UDP"` seems to ignore the optional extension
headers between the IPv6 header and the UDP header.

The wording in `IPv6 next header field set to "UDP"` seems to indicate an
action "to set" rather than "being equal to" (as suggested by the leading `The
information needed to identify individual`). Suggest to clarify.

I am most probably missing something obvious here but does this section assumes
that the only DetNet flows are UDP ?

# NITS (non-blocking / cosmetic)

## Section 1

Unsure whether 'correctly' is sensible in `correctly represented as PREOF`.

Unsure whether the reference to a YANG model is useful in the same 1st