[shara] dynamic allocation of port ranges in draft-bajko-v6ops-port-restricted-ipaddr-assign

"Dan Wing" <dwing@cisco.com> Thu, 12 March 2009 00:40 UTC

Return-Path: <dwing@cisco.com>
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 218943A6941 for <shara@core3.amsl.com>; Wed, 11 Mar 2009 17:40:05 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.923
X-Spam-Level:
X-Spam-Status: No, score=-5.923 tagged_above=-999 required=5 tests=[AWL=0.676, BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4]
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 gFeXm6CxeC4A for <shara@core3.amsl.com>; Wed, 11 Mar 2009 17:40:04 -0700 (PDT)
Received: from sj-iport-6.cisco.com (sj-iport-6.cisco.com [171.71.176.117]) by core3.amsl.com (Postfix) with ESMTP id 56B513A67D4 for <shara@ietf.org>; Wed, 11 Mar 2009 17:40:04 -0700 (PDT)
X-IronPort-AV: E=Sophos;i="4.38,346,1233532800"; d="scan'208";a="265780805"
Received: from sj-dkim-2.cisco.com ([171.71.179.186]) by sj-iport-6.cisco.com with ESMTP; 12 Mar 2009 00:40:41 +0000
Received: from sj-core-3.cisco.com (sj-core-3.cisco.com [171.68.223.137]) by sj-dkim-2.cisco.com (8.12.11/8.12.11) with ESMTP id n2C0efjx003682 for <shara@ietf.org>; Wed, 11 Mar 2009 17:40:41 -0700
Received: from dwingwxp01 ([10.32.240.194]) by sj-core-3.cisco.com (8.13.8/8.13.8) with ESMTP id n2C0efMI016370 for <shara@ietf.org>; Thu, 12 Mar 2009 00:40:41 GMT
From: "Dan Wing" <dwing@cisco.com>
To: <shara@ietf.org>
Date: Wed, 11 Mar 2009 17:40:40 -0700
Message-ID: <022601c9a2ab$2b6f46b0$fd736b80@cisco.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook 11
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350
Thread-Index: Acmiqys4doeQlz8/TqSaYAuofSBJEw==
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; l=843; t=1236818441; x=1237682441; c=relaxed/simple; s=sjdkim2002; h=Content-Type:From:Subject:Content-Transfer-Encoding:MIME-Version; d=cisco.com; i=dwing@cisco.com; z=From:=20=22Dan=20Wing=22=20<dwing@cisco.com> |Subject:=20dynamic=20allocation=20of=20port=20ranges=20in= 20draft-bajko-v6ops-port-restricted-ipaddr-assign |Sender:=20; bh=1JmzeiB3t7FqYTmYhWcG7wZZYiYVt1U7AkRAmL43igQ=; b=t4N7LlmNj5OtbI8eSvq/cW1O9uWDUukTs7e0OCN7ztlQJXc5yzzbCq0pVX vRsaMDRDpgc8H/QaaBUF6c5b831wcHhOQV5TcOohPvewwA/xd8Wah0YvV5j3 Du0exvgwuw;
Authentication-Results: sj-dkim-2; header.From=dwing@cisco.com; dkim=pass ( sig from cisco.com/sjdkim2002 verified; );
Subject: [shara] dynamic allocation of port ranges in draft-bajko-v6ops-port-restricted-ipaddr-assign
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: Thu, 12 Mar 2009 00:40:05 -0000

I was pleased to see the new "Dynamic allocation of port ranges" section in 
draft-ymbk-aplusp-03.  While digging into the details a bit, I saw in
Section 4.2 of draft-bajko-v6ops-port-restricted-ipaddr-assign-02:

   When the server detects that a client with a specific hardware
   address, having already been allocated with a port restricted IP
   address, sent another DHCPDISCOVER, it MAY, based on local policy,
   offer the client with additional port restricted IP address.
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

I interpret the highlighted phrase to mean the PRR provides a range of 
ports on a *different* IP address.  Is that the intent?  I had expected 
that sentence in the I-D to conclude with "... offer the client 
additional ports on the same IP address as previously allocated."

-d