Re: Last Call: <draft-ietf-6man-rfc2460bis-08.txt> (Internet Protocol, Version 6 (IPv6) Specification) to Internet Standard

"Stefano Previdi (sprevidi)" <sprevidi@cisco.com> Fri, 03 February 2017 08:51 UTC

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From: "Stefano Previdi (sprevidi)" <sprevidi@cisco.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Subject: Re: Last Call: <draft-ietf-6man-rfc2460bis-08.txt> (Internet Protocol, Version 6 (IPv6) Specification) to Internet Standard
Thread-Topic: Last Call: <draft-ietf-6man-rfc2460bis-08.txt> (Internet Protocol, Version 6 (IPv6) Specification) to Internet Standard
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Date: Fri, 03 Feb 2017 08:51:22 +0000
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> On Feb 3, 2017, at 1:37 AM, Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
> 
> In Section 4 ("IPv6 Extension Headers") the draft says:
> 
>>   With one exception, extension headers are not processed by any node
>>   along a packet's delivery path, until the packet reaches the node (or
>>   each of the set of nodes, in the case of multicast) identified in the
>>   Destination Address field of the IPv6 header.
> 
> (FYI, the exception is the hop-by-hop extension header.)
> 
> I do not dispute that this sentence reached WG consensus. However, I want
> to ask if it has IETF consensus. In my opinion, this sentence should read
> 
>   With one exception, extension headers are not processed, inserted,
>   deleted or modified by any node along a packet's delivery path, until
>   the packet reaches the node (or each of the set of nodes, in the case
>   of multicast) identified in the Destination Address field of the IPv6
>   header.
> 
> I believe this was always the intended meaning of the word "processed"
> from the earliest design phase of IPv6, but some people have read this
> text as allowing insertion, deletion or modification of headers. IMHO
> it needs to be clarified.


are we re-spinning the debate on a WG-agreed text ? 

s.


> 
> Regards
>   Brian Carpenter
> 
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