Bruno,
While I like many things about this draft, I don't think that it is ready for
adoption. Reasons follow:
* Section 4.1 appears to contradict Section 4.3.1 of
draft-ietf-6man-segment-routing-header. In particular, consider the behavior
when Segments Left equals 0.
* Sections 4.13, 4.14. 4.21.1 and 4.21.2 appear to be in conflict with RFC
8200 [1] [2].
* The intent of section 4.19 is unclear.
* As Adrian points out, the draft extends the semantics of the IPv6
address. Such a decision may have wide-reaching impact, and should be
socialized with a wider community (6man, INTAREA WG, V6OPS)
* The draft appears to be in conflict with
draft-ietf-6man-segment-routing-header regarding how extension headers after
the SRH are processed. According to draft-ietf-6man-segment-routing-header,
subsequent extension headers are processed out of order, potentially in
conflict with RFC 8200. According to this draft, subsequent extension headers
are ignored.
[1] According to RFC 8200, "Each extension header should occur at most once,
except for the Destination Options header, which should occur at most twice
(once before a Routing header and once before the upper-layer header)."
[2] According to RFC 8200, "extension headers must be processed strictly in the
order they appear in the packet" . Sections 4.13 and 4.14 violate this rule by
prepending an SRH before the SRH that is currently being processed.
Ron
From: spring <[email protected]> On Behalf Of [email protected]
Sent: Wednesday, March 13, 2019 2:50 PM
To: SPRING WG <[email protected]>
Cc: [email protected]
Subject: [spring] IPR Poll for draft-filsfils-spring-srv6-network-programming
Hi authors, SPRING WG,
In parallel to the call for adoption for
draft-filsfils-spring-srv6-network-programming (1), we would like to poll for
IPR.
If you are aware of IPR that applies to
draft-filsfils-spring-srv6-network-programming please respond to this email.
If you are aware of IPR, please indicate whether it has been disclosed in
accordance with IETF IPR rules (RFCs 3979, 4879, 3669 and 5378 provide more
details).
If you are an *author or contributor* please respond to this email regardless
of whether or not you're aware of any IPR.
If you are not an author or contributor, please explicitly respond only if you
are aware of IPR that has not yet been disclosed.
This document will not advance into the working group until IPR confirmations
have been received from all authors and contributors.
Thank you,
(1)
https://tools.ietf.org/html/draft-filsfils-spring-srv6-network-programming-07<https://urldefense.proofpoint.com/v2/url?u=https-3A__tools.ietf.org_html_draft-2Dfilsfils-2Dspring-2Dsrv6-2Dnetwork-2Dprogramming-2D07&d=DwMFAg&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=Fch9FQ82sir-BoLx84hKuKwl-AWF2EfpHcAwrDThKP8&m=g5euhKG6OY3m1hMFewvX_AhsPNPcaeHrTSLS3oY3KoM&s=5KlDTs7QncIP0FnevaMhAHEIjoQLlCw9xVVUrR40dqY&e=>
--Bruno & Rob.
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