Re: [shara] draft-thaler-port-restricted-ip-issues-00 - A+P tunneling

Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp> Wed, 03 March 2010 19:41 UTC

Return-Path: <mohta@necom830.hpcl.titech.ac.jp>
X-Original-To: shara@core3.amsl.com
Delivered-To: shara@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 6A60C28C475 for <shara@core3.amsl.com>; Wed, 3 Mar 2010 11:41:26 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: 0.363
X-Spam-Level:
X-Spam-Status: No, score=0.363 tagged_above=-999 required=5 tests=[AWL=0.453, BAYES_00=-2.599, HELO_EQ_JP=1.244, HOST_EQ_JP=1.265]
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 PGgOMJffZACo for <shara@core3.amsl.com>; Wed, 3 Mar 2010 11:41:25 -0800 (PST)
Received: from necom830.hpcl.titech.ac.jp (necom830.hpcl.titech.ac.jp [131.112.32.132]) by core3.amsl.com (Postfix) with SMTP id 07B7C28C131 for <shara@ietf.org>; Wed, 3 Mar 2010 11:41:24 -0800 (PST)
Received: (qmail 82761 invoked from network); 3 Mar 2010 20:46:12 -0000
Received: from softbank219001188004.bbtec.net (HELO necom830.hpcl.titech.ac.jp) (219.1.188.4) by necom830.hpcl.titech.ac.jp with SMTP; 3 Mar 2010 20:46:12 -0000
Message-ID: <4B8EBB3D.6090403@necom830.hpcl.titech.ac.jp>
Date: Thu, 04 Mar 2010 04:40:45 +0900
From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; ja-JP; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
X-Accept-Language: ja, en
MIME-Version: 1.0
To: remi.despres@free.fr
References: <A7BE0643-692E-4C72-B811-1DFEF58F326F@free.fr>
In-Reply-To: <A7BE0643-692E-4C72-B811-1DFEF58F326F@free.fr>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Cc: shara@ietf.org
Subject: Re: [shara] draft-thaler-port-restricted-ip-issues-00 - A+P tunneling
X-BeenThere: shara@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: Sharing of an IPv4 Address discussion list <shara.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/shara>, <mailto:shara-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/shara>
List-Post: <mailto:shara@ietf.org>
List-Help: <mailto:shara-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/shara>, <mailto:shara-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 03 Mar 2010 19:41:26 -0000

Remi wrote:

> If A+P packets are locally encapsulated over private-address
> IPv4 (see point 2 above), this remains possible.

ICMP with PR-IP just works not because of your point 2, but because
of identifier and sequence number fields copied from request to reply
just as source and destination port numbers copied (in reverse order)
from request to reply.
							Masataka Ohta