Re: Updating to RFC6434 to deal with 8200-style header insertion by IPIP

Michael Richardson <mcr+ietf@sandelman.ca> Sun, 05 November 2017 01:37 UTC

Return-Path: <mcr+ietf@sandelman.ca>
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 1393613FC38 for <ipv6@ietfa.amsl.com>; Sat, 4 Nov 2017 18:37:05 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 TVwko1daiYVX for <ipv6@ietfa.amsl.com>; Sat, 4 Nov 2017 18:37:03 -0700 (PDT)
Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C415613FAE3 for <ipv6@ietf.org>; Sat, 4 Nov 2017 18:37:03 -0700 (PDT)
Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id 0D5D1200F4; Sat, 4 Nov 2017 21:38:08 -0400 (EDT)
Received: from obiwan.sandelman.ca (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id A556181F0B; Sat, 4 Nov 2017 21:37:02 -0400 (EDT)
From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
cc: "C. M. Heard" <heard@pobox.com>, 6man WG <ipv6@ietf.org>
Subject: Re: Updating to RFC6434 to deal with 8200-style header insertion by IPIP
In-Reply-To: <f7feace2-86d2-a2f0-5662-469405aa32e8@gmail.com>
References: <CACL_3VETxNVQ+YD5j6ZiWjycQ=ojAuWwB23offNdVKm+S9c_7A@mail.gmail.com> <23308.1509623865@obiwan.sandelman.ca> <CACL_3VFrcombGczXU6Zz=Pk1u2GE=wGG-r+yEefdHai1REqXmQ@mail.gmail.com> <c8911f45-2afc-9d26-c0a8-1017d034a251@gmail.com> <CACL_3VEjp2bJAAGgqaKcqdqHoitE6vw6M3=qO6YauVoKN-26=A@mail.gmail.com> <f7feace2-86d2-a2f0-5662-469405aa32e8@gmail.com>
X-Mailer: MH-E 8.6; nmh 1.7-RC3; GNU Emacs 24.5.1
X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m<nPbLgmtKK-5dC@#:k
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-="; micalg="pgp-sha256"; protocol="application/pgp-signature"
Date: Sat, 04 Nov 2017 21:37:02 -0400
Message-ID: <7923.1509845822@obiwan.sandelman.ca>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/Dd6uzMOAaKRDAzb5y7Bs6htji5o>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.22
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: Sun, 05 Nov 2017 01:37:05 -0000

Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
    > Yes, that particular elephant stands politely and quietly in the corner
    > of the room. However, I'd just read the text you cite when I wrote my
    > message and I'll stick to what I said: we *specify* action for an
    > unrecognized extension header, but we ignore the elephant and *don't*
    > specify action for an unrecognized ULP. Consider it a drafting error,
    > or a design error. I agree with you about the practical effect: an
    > unexpected IPIP packet is likely to generate ICMP 1 today.

okay, so shouldn't 6463 fix this part at least?

-- 
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-