Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-client-link-layer-addr-opt-02.txt
"Bernie Volz (volz)" <volz@cisco.com> Fri, 21 September 2012 14:46 UTC
Return-Path: <volz@cisco.com>
X-Original-To: dhcwg@ietfa.amsl.com
Delivered-To: dhcwg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4B46C21F8787; Fri, 21 Sep 2012 07:46:40 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -10.399
X-Spam-Level:
X-Spam-Status: No, score=-10.399 tagged_above=-999 required=5 tests=[AWL=0.200, BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8]
Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tBBoL7tCE0m9; Fri, 21 Sep 2012 07:46:39 -0700 (PDT)
Received: from rcdn-iport-3.cisco.com (rcdn-iport-3.cisco.com [173.37.86.74]) by ietfa.amsl.com (Postfix) with ESMTP id 61BE421F8573; Fri, 21 Sep 2012 07:46:39 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3774; q=dns/txt; s=iport; t=1348238799; x=1349448399; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=s9Y92aJHgGvsX7nzY6bnQyKqUCdQgBpl3rx6rvyFccQ=; b=SBKVbLl6ODfoz/ayjOdH8YLukVweve8j3mokIfR11pG22L7UVp2MYsKs rYZ+EQBOy0Km10N+B/CnSiAXki6Wq0jmWryd10OqxL23JQFU1PHpkGXN2 TgKZR66MH6qSGDnk7p4MvqKv4mL1NjtWy4U0HTrtQHup31L1l2Szhd9LW 4=;
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AgAFAEp9XFCtJV2d/2dsb2JhbABFvhGBCIIgAQEBAwEBAQEPAScyAggDBQcEAgEIEQQBAQEKFAkHJwsUCQgCBAENBQgBGYddBguZJaAXixyFRmADlnmNJIFpgmeCFw
X-IronPort-AV: E=Sophos;i="4.80,463,1344211200"; d="scan'208";a="124027347"
Received: from rcdn-core-6.cisco.com ([173.37.93.157]) by rcdn-iport-3.cisco.com with ESMTP; 21 Sep 2012 14:46:39 +0000
Received: from xhc-aln-x15.cisco.com (xhc-aln-x15.cisco.com [173.36.12.89]) by rcdn-core-6.cisco.com (8.14.5/8.14.5) with ESMTP id q8LEkcS0015561 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 21 Sep 2012 14:46:38 GMT
Received: from xmb-rcd-x04.cisco.com ([169.254.8.159]) by xhc-aln-x15.cisco.com ([173.36.12.89]) with mapi id 14.02.0318.001; Fri, 21 Sep 2012 09:46:38 -0500
From: "Bernie Volz (volz)" <volz@cisco.com>
To: Bud Millwood <budm@weird-solutions.com>, "internet-drafts@ietf.org" <internet-drafts@ietf.org>
Thread-Topic: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-client-link-layer-addr-opt-02.txt
Thread-Index: AQHNmADDJHF2/BOLqUmBR8gLtdibXJeU3W/Q
Date: Fri, 21 Sep 2012 14:46:38 +0000
Message-ID: <489D13FBFA9B3E41812EA89F188F018E0F503257@xmb-rcd-x04.cisco.com>
References: <20120921103403.10090.70019.idtracker@ietfa.amsl.com> <CAOpJ=k3ZUhda4Z_oQD=Ktdo1Do+2n9yaDrDb1wndG1QmfSS8mw@mail.gmail.com>
In-Reply-To: <CAOpJ=k3ZUhda4Z_oQD=Ktdo1Do+2n9yaDrDb1wndG1QmfSS8mw@mail.gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [10.86.250.189]
x-tm-as-product-ver: SMEX-10.2.0.1135-7.000.1014-19200.001
x-tm-as-result: No--36.440800-8.000000-31
x-tm-as-user-approved-sender: No
x-tm-as-user-blocked-sender: No
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Cc: "dhcwg@ietf.org" <dhcwg@ietf.org>, "i-d-announce@ietf.org" <i-d-announce@ietf.org>
Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-client-link-layer-addr-opt-02.txt
X-BeenThere: dhcwg@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: <dhcwg.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dhcwg>, <mailto:dhcwg-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dhcwg>
List-Post: <mailto:dhcwg@ietf.org>
List-Help: <mailto:dhcwg-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dhcwg>, <mailto:dhcwg-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 21 Sep 2012 14:46:40 -0000
I do like "inner-most Relay-Forw" (i.e. the relay that received the client's packet [msg-type != Relay-Forw]). While in theory a MUST is probably correct, there might be cases where that doesn't work? So, I would lean towards SHOULD to potentially support cases where there might be a second (the next) relay that has this information [and the first does not]? Certainly the MUST is correct for traditional applications (i.e. corporate Ethernet based networks or CableLabs DOCSIS). I can't give you a specific example, but perhaps there are some from networks that don't support multicast or where a relay proxy is needed on the device itself (as then you'd have the client providing this information)? - Bernie -----Original Message----- From: dhcwg-bounces@ietf.org [mailto:dhcwg-bounces@ietf.org] On Behalf Of Bud Millwood Sent: Friday, September 21, 2012 9:55 AM To: internet-drafts@ietf.org Cc: dhcwg@ietf.org; i-d-announce@ietf.org Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-client-link-layer-addr-opt-02.txt 5. DHCPv6 Server Behavior > If DHCPv6 Server is configured to store or use client link-layer address, it SHOULD look for the client link-layer address option in the RELAY-FORW DHCP message of the DHCPv6 Relay agent closest to the client. Although I understand what "closest to the client" means (I use that term myself), is that the correct terminology? It could also be referred to as the inner-most RELAY-FORW message, or the first RELAY-FORW message. Is there even a standard terminology for this? I just glanced through 3315 and don't see anything. Also, the server "SHOULD" look for the link-layer address in the closest RELAY-FORW message. What are the ramifications of changing this to MUST? Is there any scenario where a second-hop relay would know the link-layer address, but the first hop wouldn't know it or support this RFC? Do we gain anything by enforcing that a conveyed link-layer address is only valid or to be trusted if it's from the first-hop relay? - Bud On Fri, Sep 21, 2012 at 12:34 PM, <internet-drafts@ietf.org> wrote: > > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Dynamic Host Configuration Working Group of the IETF. > > Title : Client Link-layer Address Option in DHCPv6 > Author(s) : Gaurav Halwasia > Shwetha Bhandari > Wojciech Dec > Filename : draft-ietf-dhc-dhcpv6-client-link-layer-addr-opt-02.txt > Pages : 6 > Date : 2012-09-21 > > Abstract: > This document specifies the format and mechanism that is to be used > for encoding client link-layer address in DHCPv6 relay forward > messages by defining a new DHCPv6 Client Link-layer Address option. > > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-dhc-dhcpv6-client-link-lay > er-addr-opt > > There's also a htmlized version available at: > http://tools.ietf.org/html/draft-ietf-dhc-dhcpv6-client-link-layer-add > r-opt-02 > > A diff from the previous version is available at: > http://www.ietf.org/rfcdiff?url2=draft-ietf-dhc-dhcpv6-client-link-lay > er-addr-opt-02 > > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > _______________________________________________ > dhcwg mailing list > dhcwg@ietf.org > https://www.ietf.org/mailman/listinfo/dhcwg _______________________________________________ dhcwg mailing list dhcwg@ietf.org https://www.ietf.org/mailman/listinfo/dhcwg
- [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-client-… internet-drafts
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… Gaurav Halwasia (ghalwasi)
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… Simon Hobson
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… perl-list
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… Chuck Anderson
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… Ted Lemon
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… Bud Millwood
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… Gaurav Halwasia (ghalwasi)
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… Bernie Volz (volz)
- Re: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-cli… Bud Millwood