IETF Logo Mail Archive

Re: [v6ops] RFC6459 "IPv6 in 3GPP" - the IID in the LL address and GUA

神明達哉 <jinmei@wide.ad.jp> Wed, 12 July 2017 14:58 UTC

Return-Path: <jinmei.tatuya@gmail.com>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2A3E1131453 for <v6ops@ietfa.amsl.com>; Wed, 12 Jul 2017 07:58:09 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.4
X-Spam-Level:
X-Spam-Status: No, score=-2.4 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.199, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
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 NnDRJf4TQkgg for <v6ops@ietfa.amsl.com>; Wed, 12 Jul 2017 07:58:07 -0700 (PDT)
Received: from mail-qk0-x22c.google.com (mail-qk0-x22c.google.com [IPv6:2607:f8b0:400d:c09::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A8B70126C22 for <v6ops@ietf.org>; Wed, 12 Jul 2017 07:58:07 -0700 (PDT)
Received: by mail-qk0-x22c.google.com with SMTP id 16so26559557qkg.2 for <v6ops@ietf.org>; Wed, 12 Jul 2017 07:58:07 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=xvfvZwZmjjKfhENvjfvOqCkBrIHQ8qfKTMWxgodEHko=; b=Egchv2tCjKQ0SpvMbaDjtkhM/o9Ehnk7W9cR4JdN11ga3CNx7arPMYQvyX7TiTN1f2 QQFcIKpwtRKMLgZNTP+YlIo9sX9BHYa5rWTF70iPunlIAjDzLlJeKZkMClbuI7+hkjhQ hDzII5E89nUHAfikFowhx07Qnz8p2Ylm8dpn7mlZoodauZYrMTqM2fY7PjWGGwa8brPm zg8uDUyORVtceC5RXEt+Wq06Yp/Y2btbkC/7nZKZlz39Rxol6B0ftsc6YXyWH5IKwiqy XkimPp38Wp85nUyaiByqZUNkF6Z4j2WWy6ELUin/YhqHWYtAskZ+NRak5o7V+NiXQ2ig MkfA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=xvfvZwZmjjKfhENvjfvOqCkBrIHQ8qfKTMWxgodEHko=; b=tLpPl1bgjC1n7MEo0gpFc2qAzZhROChoYlLyeQpofbh0z1FIFo3q/INBFCKMJkOjTH hhXQdsNKiVZmqry/wT7Cy0CGHky/i7rCef3QQj+6/XGtbMo3nK3DK+yxhniO9Xw0lDu1 OKpU3QWvLHrOB4Yj4ROCHsPMkm9d63fonqR4JeRxJmyR5n2RHd21a8mDzy8Qtryxza7k 3WKbzIc2ZeeIg4qw98Zr3jiBzxSlz4kfx9XEM/pvw6z2gMMDQb4Cnoy10vyhAtbQbwTg vLfAc48o4wMEnDVl9uztqLkdKtCQJfJmZ+cP6PpUTHAsGS2JUUVrVU78JXxawBVXcjsI jQcQ==
X-Gm-Message-State: AIVw113pQAPsjRC6X8N36OnsMxnthsk4v8TYdARA0+oT6+rzVhCRjHpx 5UTK7Kd/LwNxZGBL/3bxQYzpyLy2uQ==
X-Received: by 10.55.72.81 with SMTP id v78mr6398318qka.133.1499871486794; Wed, 12 Jul 2017 07:58:06 -0700 (PDT)
MIME-Version: 1.0
Sender: jinmei.tatuya@gmail.com
Received: by 10.237.60.44 with HTTP; Wed, 12 Jul 2017 07:58:06 -0700 (PDT)
In-Reply-To: <6c43cf08-0bd6-daf4-ea9d-d52c34db2a8c@gmail.com>
References: <937f22f6-e4b7-b398-9df9-79c36ea2d7ee@gmail.com> <787AE7BB302AE849A7480A190F8B93300A002E21@OPEXCLILMA3.corporate.adroot.infra.ftgroup> <a67eb7d0-be6a-f158-b05c-fda0f38e09d6@gmail.com> <787AE7BB302AE849A7480A190F8B93300A002EF9@OPEXCLILMA3.corporate.adroot.infra.ftgroup> <1be23f5b-f449-9924-8322-f21c4ccbd09e@gmail.com> <787AE7BB302AE849A7480A190F8B93300A002F95@OPEXCLILMA3.corporate.adroot.infra.ftgroup> <2c325097-651e-501c-747a-e7a322c3d844@gmail.com> <787AE7BB302AE849A7480A190F8B93300A0032B6@OPEXCLILMA3.corporate.adroot.infra.ftgroup> <6c43cf08-0bd6-daf4-ea9d-d52c34db2a8c@gmail.com>
From: 神明達哉 <jinmei@wide.ad.jp>
Date: Wed, 12 Jul 2017 07:58:06 -0700
X-Google-Sender-Auth: B7qh8Jb8tO4CYiBoTXd4H_jHBUQ
Message-ID: <CAJE_bqem6dKVcANbVgQLbny2ks5jvVNELRqwPECM_TiJtOtxcg@mail.gmail.com>
To: Alexandre Petrescu <alexandre.petrescu@gmail.com>
Cc: mohamed.boucadair@orange.com, "v6ops@ietf.org" <v6ops@ietf.org>
Content-Type: text/plain; charset="UTF-8"
Archived-At: <https://mailarchive.ietf.org/arch/msg/v6ops/I2gZ7xgPtT7NWTk9Wu5EfoC3ocg>
Subject: Re: [v6ops] RFC6459 "IPv6 in 3GPP" - the IID in the LL address and GUA
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: v6ops discussion list <v6ops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/v6ops>, <mailto:v6ops-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/v6ops/>
List-Post: <mailto:v6ops@ietf.org>
List-Help: <mailto:v6ops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/v6ops>, <mailto:v6ops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 12 Jul 2017 14:58:09 -0000

At Wed, 12 Jul 2017 13:41:39 +0200,
Alexandre Petrescu <alexandre.petrescu@gmail.com> wrote:

> > == The GGSN shall not generate any globally unique IPv6 addresses for
> > itself using the Prefix assigned to the MS in the Router
> > Advertisement. ==
>
> I think that spec is wrong (3GPP TS. 29.061?).
>
> Because, in practice some operator on some APN puts a GUA (not an LLA)
> on its router's interface towards the UE.  It uses that GUA in the src
> of the RA sent to the UE.  Packet dump available upon request.

I have no expertise in the 3GPP spec, but if I understand the above
correctly it's broken even more fundamentally: the source address
of an RA MUST be a link-local address.

4.2.  Router Advertisement Message Format
[...]
      Source Address
                     MUST be the link-local address assigned to the
                     interface from which this message is sent.
(from RFC4861)

If you really see an RA with a non-LL source address, a textual
snippet of the packet dump will certainly be interesting.

--
JINMEI, Tatuya

v2.23.0 | Report a Bug | By Email