Pablo,
I am sure that you have read RFC 8200 carefully enough to have noticed the
following text:
"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).
This rule addresses the number of extension headers of any given type that can
appear in a single packet. A packet that contains one IP header and two routing
headers would violate this rule.
You quote the following text, also from RFC 8200, omitting the final sentences:
"IPv6 nodes must accept and attempt to process extension headers in any order
and occurring any number of times in the same packet, except for the Hop-by-Hop
Options header, which is restricted to appear immediately after an IPv6 header
only. Nonetheless, it is strongly advised that sources of IPv6 packets adhere
to the above recommended order until and unless subsequent specifications revise
that recommendation."
Is it your intent to ignore the strong advice of RFC 8200 without offering any
justification?
Ron
Juniper Business Use Only
From: Pablo Camarillo (pcamaril) <[email protected]>
Sent: Tuesday, October 15, 2019 12:45 PM
To: Ron Bonica <[email protected]>; SPRING WG List <[email protected]>
Subject: Re: [spring] draft-ietf-spring-srv6-network-programming-04: Section 2
Ron,
That sentence is there on purpose. RFC8200:
IPv6 nodes must accept and attempt to process extension headers in
any order and occurring any number of times in the same packet
I will update that sentence in the next revision of the draft to make it more
formal and include the normative reference:
"As per [RFC8200], multiple occurrences of the SRH might be present in the same
IPv6 header."
Cheers,
Pablo.
From: spring <[email protected]<mailto:[email protected]>> on
behalf of Ron Bonica
<[email protected]<mailto:[email protected]>>
Date: Monday, 14 October 2019 at 20:28
To: SPRING WG List <[email protected]<mailto:[email protected]>>
Subject: [spring] draft-ietf-spring-srv6-network-programming-04: Section 2
Authors,
In Section 2 of draft-ietf-spring-srv6-network-programming-04, you say:
"SRH: Segment Routing Header as defined in
[I-D.ietf-6man-segment-routing-header]. We assume that the SRH may be present
multiple times inside each packet."
Did you mean to remove the final sentence?
Ron
Juniper Business Use Only
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