Re: [dhcwg] I-D Action: draft-ietf-dhc-conn-status-00.txt

"Prashanth Patil (praspati)" <praspati@cisco.com> Wed, 05 February 2014 13:48 UTC

Return-Path: <praspati@cisco.com>
X-Original-To: dhcwg@ietfa.amsl.com
Delivered-To: dhcwg@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9A7CD1A0134 for <dhcwg@ietfa.amsl.com>; Wed, 5 Feb 2014 05:48:12 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -15.036
X-Spam-Level:
X-Spam-Status: No, score=-15.036 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.535, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id beYpvSe213GD for <dhcwg@ietfa.amsl.com>; Wed, 5 Feb 2014 05:48:10 -0800 (PST)
Received: from rcdn-iport-5.cisco.com (rcdn-iport-5.cisco.com [173.37.86.76]) by ietfa.amsl.com (Postfix) with ESMTP id CF8671A012D for <dhcwg@ietf.org>; Wed, 5 Feb 2014 05:48:10 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=846; q=dns/txt; s=iport; t=1391608090; x=1392817690; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=XkMi9M3GMchtVee1T5tw9kB5452mR4da8mdeWCvf0hM=; b=kwfsuOerC7mqEVDRcckonntlK89hynbarUDETERDLgFDV+axYRZmUmf9 olKD9KQYZzG2OMoiARrRFMxzwXfwsCIpOPxlnSQSHjtcThoPb++2d3sW9 jN7pS6NB15lBDPBWbLST5zNhIGfwNkukFB0xTwtH4OI0Q5PMde8H6CFG1 k=;
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AhMFANs/8lKtJV2Y/2dsb2JhbABZgww4V75DgQ8WdIIlAQEBBDo/EAIBCBgeEDIlAgQOBYgFDc8sF451B4Q4AQOYK4EykG+DLYIq
X-IronPort-AV: E=Sophos;i="4.95,786,1384300800"; d="scan'208";a="302016273"
Received: from rcdn-core-1.cisco.com ([173.37.93.152]) by rcdn-iport-5.cisco.com with ESMTP; 05 Feb 2014 13:48:10 +0000
Received: from xhc-aln-x04.cisco.com (xhc-aln-x04.cisco.com [173.36.12.78]) by rcdn-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s15Dm9Id028279 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 5 Feb 2014 13:48:09 GMT
Received: from xmb-rcd-x07.cisco.com ([169.254.7.109]) by xhc-aln-x04.cisco.com ([173.36.12.78]) with mapi id 14.03.0123.003; Wed, 5 Feb 2014 07:48:09 -0600
From: "Prashanth Patil (praspati)" <praspati@cisco.com>
To: Ted Lemon <ted.lemon@nominum.com>
Thread-Topic: [dhcwg] I-D Action: draft-ietf-dhc-conn-status-00.txt
Thread-Index: AQHPIm/88WLbaB69ZEKJQ9CMuC10qZqnbbWA
Date: Wed, 05 Feb 2014 13:48:08 +0000
Message-ID: <CF183474.17FEB%praspati@cisco.com>
References: <20140204093611.4914.51694.idtracker@ietfa.amsl.com> <52F0F3C2.20807@viagenie.ca> <4B094E1A-431F-4F2B-9004-37D6D12BE8F8@nominum.com> <52F0F8F4.4060905@viagenie.ca> <EEEC392B-7B7B-4AAE-BE24-AEC944DFABFA@nominum.com> <CF17B34D.17390%praspati@cisco.com> <07C71B9E-3D2B-4714-9A5C-67C51B9F028F@nominum.com>
In-Reply-To: <07C71B9E-3D2B-4714-9A5C-67C51B9F028F@nominum.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/14.3.9.131030
x-originating-ip: [72.163.206.159]
Content-Type: text/plain; charset="us-ascii"
Content-ID: <480E50C6E77E0043AAAB5C9B577AA817@emea.cisco.com>
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Cc: "dhcwg@ietf.org WG" <dhcwg@ietf.org>
Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-conn-status-00.txt
X-BeenThere: dhcwg@ietf.org
X-Mailman-Version: 2.1.15
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: Wed, 05 Feb 2014 13:48:12 -0000

On 2/5/14 6:14 PM, "Ted Lemon" <ted.lemon@nominum.com> wrote:

>On Feb 4, 2014, at 11:07 PM, Prashanth Patil (praspati)
><praspati@cisco.com> wrote:
>> Sure. The idea was to be able to detect transitions as well i.e. Dual
>> stack to IPv6 only, which the server cannot detect unless informed.
>> Whether this detection is generically useful, needs discussion.
>
>Of course the server can detect this.   When the DHCPv4 lease expires
>without being renewed, either the host is no longer attached to the
>network, or it's v6-only.   Am I missing something?

I should've been more precise. I meant a relay, using snooping mechanisms
(http://tools.ietf.org/html/draft-ietf-dhc-conn-status-00#section-7),
detecting that IPv4 is no longer active (even if lease hasn't expired) and
signaling this to the server.


-Prashanth

>