IETF Logo Mail Archive

Re: [Softwires] WG Review: Recharter of Softwires (softwire)

Brian E Carpenter <brian.e.carpenter@gmail.com> Mon, 21 March 2011 22:27 UTC

Return-Path: <brian.e.carpenter@gmail.com>
X-Original-To: softwires@core3.amsl.com
Delivered-To: softwires@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 804A03A68F7; Mon, 21 Mar 2011 15:27:45 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -103.449
X-Spam-Level:
X-Spam-Status: No, score=-103.449 tagged_above=-999 required=5 tests=[AWL=0.150, BAYES_00=-2.599, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qH1lGgtBXIEe; Mon, 21 Mar 2011 15:27:44 -0700 (PDT)
Received: from mail-gy0-f172.google.com (mail-gy0-f172.google.com [209.85.160.172]) by core3.amsl.com (Postfix) with ESMTP id 79BB23A68F5; Mon, 21 Mar 2011 15:27:44 -0700 (PDT)
Received: by gyf3 with SMTP id 3so2434885gyf.31 for <multiple recipients>; Mon, 21 Mar 2011 15:29:17 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:message-id:date:from:organization:user-agent :mime-version:to:cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=OEtb09ndPvoGEi//EH6JH01AVbg/LneVy3VVLz710Yo=; b=mSZB4IV3ho/iFnRh25sbgksUx3evfz0AmPT5UoTXBK5MCgXWebROE2yXhiV3W4RXuT lzeIM0GoJkBhC8a8lADJZdcKGa5ba+R3FenrB2p91VBkEe6rYx5xJ/LGCF9ZUQvsSdmP egXq3WkwdKHVRUaZ8PsZ6UyfcroJpe193Ke/c=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:organization:user-agent:mime-version:to:cc :subject:references:in-reply-to:content-type :content-transfer-encoding; b=uHwhr344WfR752zb08ZcCl21M6WdKfv/tbtVqFfLAvzwTVaMp+zsh+uxmtfCDjGxPz 6BRFNflDQWKTBsxXfw3hqB8vJwj9NEAAOi7Y5hmawk7ju+A+1asPF/qWvzszC4lH4Ws3 zKt99OQFg3xCo7yeLFn1TinIrf+8RDq7WUVUk=
Received: by 10.151.131.15 with SMTP id i15mr4219916ybn.386.1300746556986; Mon, 21 Mar 2011 15:29:16 -0700 (PDT)
Received: from [130.216.38.124] (stf-brian.sfac.auckland.ac.nz [130.216.38.124]) by mx.google.com with ESMTPS id w15sm1940297ybk.1.2011.03.21.15.29.14 (version=SSLv3 cipher=OTHER); Mon, 21 Mar 2011 15:29:16 -0700 (PDT)
Message-ID: <4D87D138.9020107@gmail.com>
Date: Tue, 22 Mar 2011 11:29:12 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
User-Agent: Thunderbird 2.0.0.6 (Windows/20070728)
MIME-Version: 1.0
To: iesg@ietf.org
References: <20110321212944.80DA33A68DD@core3.amsl.com>
In-Reply-To: <20110321212944.80DA33A68DD@core3.amsl.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Cc: softwires@ietf.org, cuiyong@tsinghua.edu.cn
Subject: Re: [Softwires] WG Review: Recharter of Softwires (softwire)
X-BeenThere: softwires@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: softwires wg discussion list <softwires.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/softwires>, <mailto:softwires-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/softwires>
List-Post: <mailto:softwires@ietf.org>
List-Help: <mailto:softwires-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/softwires>, <mailto:softwires-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 21 Mar 2011 22:27:45 -0000

Hi,

It seems that a real world problem case is not covered by this
update: tunneling v6 over v4 when there is a legacy CPE NAT in the way,
in an ISP-managed way (unlike Teredo). At the moment this is a well
known but orphaned problem, which will remain with us until the last
NAT44-only consumer CPE device has gone.

It's certainly the case that this scenario doesn't quite match
RFC 4925 and doesn't need to "support all combinations of IP versions
over one other." However, that is just a matter of charter wordsmithing.

Nit: there's a reference to NAT-PT; maybe it should be NAT64 these days.

Regards
   Brian Carpenter

On 2011-03-22 10:29, IESG Secretary wrote:
> A modified charter has been submitted for the Softwires (softwire)
> working group in the Internet Area of the IETF.  The IESG has not made any
> determination as yet.  The modified charter is provided below for
> informational purposes only.  Please send your comments to the IESG
> mailing list (iesg@ietf.org) by Tuesday, March 29, 2011.

v2.29.0 | Report a Bug | By Email | System Status