Re: Objection to draft-ietf-6man-rfc4291bis-07.txt

Pierre Pfister <pierre.pfister@darou.fr> Thu, 23 February 2017 15:08 UTC

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From: Pierre Pfister <pierre.pfister@darou.fr>
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Subject: Re: Objection to draft-ietf-6man-rfc4291bis-07.txt
Date: Thu, 23 Feb 2017 16:07:47 +0100
In-Reply-To: <CAKD1Yr16PZDUEKQHd3At9GRz23EBKL7dTr5+aQCnzOwaT0bAxw@mail.gmail.com>
To: Lorenzo Colitti <lorenzo@google.com>
References: <20170223134026.GI5069@gir.theapt.org> <CAKD1Yr16PZDUEKQHd3At9GRz23EBKL7dTr5+aQCnzOwaT0bAxw@mail.gmail.com>
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Cc: IETF IPv6 Mailing List <ipv6@ietf.org>, Peter Hessler <phessler@theapt.org>
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> Le 23 févr. 2017 à 15:14, Lorenzo Colitti <lorenzo@google.com>; a écrit :
> 
> On Thu, Feb 23, 2017 at 10:40 PM, Peter Hessler <phessler@theapt.org <mailto:phessler@theapt.org>> wrote:
> As an implementation, OpenBSD will never add such a crazy thing.  And
> you know that many other implementations won't do so either.
> 
> I strongly oppose this draft.
> 
> Bit late to object to that text now I'm afraid.
> 
> A good time to object would have been 19 years ago when the text you object to became the standard:
> 
> 4291bis-07 (currently under discussion):
> 
>    IPv6 unicast routing is based on prefixes of any valid length up to
>    128 [BCP198].  For example, [RFC6164] standardises 127 bit prefixes
>    on inter-router point-to-point links.  However, the Interface ID of
>    all unicast addresses, except those that start with the binary value
>    000, is required to be 64 bits long.  The rationale for the 64 bit
>    boundary in IPv6 addresses can be found in [RFC7421]

The 000 rule is not implemented anywhere. 
How could that become part of the full standard if there is not a single implementation ?
But I would be curious to see someone try to upstream that in Linux.

- Pierre


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