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

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

Return-Path: <SRS0=0eqy=2E=darou.fr=pierre.pfister@bounces.m4x.org>
X-Original-To: ipv6@ietfa.amsl.com
Delivered-To: ipv6@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B035F129985 for <ipv6@ietfa.amsl.com>; Thu, 23 Feb 2017 07:08:00 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.199
X-Spam-Level:
X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZEhHzxBkXHFa for <ipv6@ietfa.amsl.com>; Thu, 23 Feb 2017 07:07:58 -0800 (PST)
Received: from mx1.polytechnique.org (mx1.polytechnique.org [129.104.30.34]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3D625129981 for <ipv6@ietf.org>; Thu, 23 Feb 2017 07:07:52 -0800 (PST)
Received: from [10.61.217.135] (unknown [173.38.220.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ssl.polytechnique.org (Postfix) with ESMTPSA id 5A2E0564984; Thu, 23 Feb 2017 16:07:49 +0100 (CET)
From: Pierre Pfister <pierre.pfister@darou.fr>
Message-Id: <33A5DA75-4D88-444A-A184-8D63ABFF2083@darou.fr>
Content-Type: multipart/alternative; boundary="Apple-Mail=_71DECF6A-ECAC-4B7A-9F35-339B124CB749"
Mime-Version: 1.0 (Mac OS X Mail 10.2 \(3259\))
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>
X-Mailer: Apple Mail (2.3259)
X-AV-Checked: ClamAV using ClamSMTP at svoboda.polytechnique.org (Thu Feb 23 16:07:49 2017 +0100 (CET))
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/ruEeb82NXzWaquJtgQ6YkVQ7vGo>
Cc: IETF IPv6 Mailing List <ipv6@ietf.org>, Peter Hessler <phessler@theapt.org>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ipv6/>
List-Post: <mailto:ipv6@ietf.org>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 23 Feb 2017 15:08:00 -0000

> 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


> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> ipv6@ietf.org
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------