Re: [Softwires] Comments on 4rd-u-04

Washam Fan <washam.fan@gmail.com> Mon, 12 March 2012 09:10 UTC

Return-Path: <washam.fan@gmail.com>
X-Original-To: softwires@ietfa.amsl.com
Delivered-To: softwires@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5429B21F8720 for <softwires@ietfa.amsl.com>; Mon, 12 Mar 2012 02:10:38 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -3.299
X-Spam-Level:
X-Spam-Status: No, score=-3.299 tagged_above=-999 required=5 tests=[AWL=-0.000, BAYES_00=-2.599, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_LOW=-1]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tKvsy2lYtn6P for <softwires@ietfa.amsl.com>; Mon, 12 Mar 2012 02:10:37 -0700 (PDT)
Received: from mail-wi0-f172.google.com (mail-wi0-f172.google.com [209.85.212.172]) by ietfa.amsl.com (Postfix) with ESMTP id 7097121F871C for <softwires@ietf.org>; Mon, 12 Mar 2012 02:10:37 -0700 (PDT)
Received: by wibhj6 with SMTP id hj6so2653839wib.13 for <softwires@ietf.org>; Mon, 12 Mar 2012 02:10:36 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=pPZoLasvJ3c8o62vyHG42BHYgU9f2/0n0SeMh/nAPtU=; b=dQxNFHcWd154UgYER9HSm53FfuC+tVLPFlN9rAgLDoNvX9twBmV/dbD/VXuMZ9tx0x bt8E9tkr9fad5RNp8QC6enAmMf487QK1sRI9WFYDN4l9qwyykt+9o9JdVsyjrwJWFhuD 9AeT2Hy6e5laM7pSkUGQpiKuUrAMND8DEkrTZHUmQrP9feJDAgInMOL/6WxZYhQtAfXA b7web5dWGQuNbyj9JccKxa+56+jrFZRrQ76e7mTnHZ0GSaklJJwOBWUsZlMjxw0azg4q P702ZxQO9TXcC5lpjyEGbpFUckTP+dg9Mc/bYaZ+vEvCDXwttfQ2jaJ5VqfcFlh1gLV4 wtLg==
MIME-Version: 1.0
Received: by 10.180.87.8 with SMTP id t8mr25004094wiz.15.1331543436486; Mon, 12 Mar 2012 02:10:36 -0700 (PDT)
Received: by 10.216.205.169 with HTTP; Mon, 12 Mar 2012 02:10:36 -0700 (PDT)
In-Reply-To: <48EF44A9-F13E-4987-946E-B4E6EC18D166@laposte.net>
References: <CAAuHL_CXKw-D=8a-9d-Wmqt9nP69sUwbZoqfQ=Q=QrKskrPeHQ@mail.gmail.com> <48EF44A9-F13E-4987-946E-B4E6EC18D166@laposte.net>
Date: Mon, 12 Mar 2012 17:10:36 +0800
Message-ID: <CAAuHL_B5_7yOcs7QA-dJ-yExBt9N-4j7Yn1YTnNHdmZ810_43g@mail.gmail.com>
From: Washam Fan <washam.fan@gmail.com>
To: Rémi Després <despres.remi@laposte.net>
Content-Type: text/plain; charset="ISO-8859-1"
Cc: Softwires <softwires@ietf.org>
Subject: Re: [Softwires] Comments on 4rd-u-04
X-BeenThere: softwires@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: softwires wg discussion list <softwires.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/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, 12 Mar 2012 09:10:38 -0000

Hi Remi,

Thanks for the clarification. Only one response,


>> 3. Fragments.
>> The algorithm proposed in R-9, would have applied to generic NAT
>> generally. Why it is specific to 4rd BR?
>
> NATs may have to remember not only destination ports but also source ports.

Yes. I agree.

> A similar algorithm could however apply to NAT64s, but this is off 4rd scope.

So curious why a similar algorithm is NOT there for NATs.

Thanks,
washam