Received: from mx.pao1.isc.org (mx.pao1.isc.org [149.20.64.53]) by bugs.isc.org (Postfix) with ESMTP id 0B4A72D2004F for ; Thu, 20 Dec 2012 21:24:11 +0000 (UTC) Received: from mx.pao1.isc.org (localhost [127.0.0.1]) by mx.pao1.isc.org (Postfix) with ESMTP id 9704EC9425 for ; Thu, 20 Dec 2012 21:24:07 +0000 (UTC) (envelope-from hpa@zytor.com) Received: from mail.zytor.com (terminus.zytor.com [IPv6:2001:1868:205::10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx.pao1.isc.org (Postfix) with ESMTPS for ; Thu, 20 Dec 2012 21:24:07 +0000 (UTC) (envelope-from hpa@zytor.com) Received: from tazenda.hos.anvin.org (c-71-202-109-166.hsd1.ca.comcast.net [71.202.109.166]) (authenticated bits=0) by mail.zytor.com (8.14.5/8.14.5) with ESMTP id qBKLO6E3020030 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Thu, 20 Dec 2012 13:24:07 -0800 Delivered-To: dhcp-suggest@bugs.isc.org Subject: IPv6 prefix delegation size MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_RP_MATCHES_RCVD autolearn=ham version=3.3.1 Return-Path: X-Original-To: dhcp-suggest@bugs.isc.org Date: Thu, 20 Dec 2012 13:24:06 -0800 X-DCC--Metrics: post.isc.org 1102; Body=1 Fuz1=1 Fuz2=1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mx.pao1.isc.org Content-Type: text/plain; charset=UTF-8; format=flowed Message-ID: <50D381F6.8030509@zytor.com> To: dhcp-suggest@isc.org Content-Transfer-Encoding: 7bit From: "H. Peter Anvin" X-RT-Original-Encoding: utf-8 Content-Length: 584 Client: please add a way to request a specific size prefix when doing a DHCPv6 prefix delegation request. Technically this is done by excluding any preexisting prefixes wider than the requested prefix, and if there are none remaining include a request for the zero prefix with the requested width (i.e. ::/60 for a prefix size of /60). Server: please make it possible to respond to such requests with a prefix of the requested size, subject to policy controls. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.