Re: [v6ops] new draft: draft-yc-v6ops-solicited-ra-unicast
"Fred Baker (fred)" <fred@cisco.com> Wed, 08 July 2015 19:09 UTC
Return-Path: <fred@cisco.com>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 75E151A8700 for <v6ops@ietfa.amsl.com>; Wed, 8 Jul 2015 12:09:27 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -114.511
X-Spam-Level:
X-Spam-Status: No, score=-114.511 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, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] 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 1zAAmISraEcU for <v6ops@ietfa.amsl.com>; Wed, 8 Jul 2015 12:09:25 -0700 (PDT)
Received: from alln-iport-5.cisco.com (alln-iport-5.cisco.com [173.37.142.92]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AB1CB1A86FD for <v6ops@ietf.org>; Wed, 8 Jul 2015 12:09:25 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3716; q=dns/txt; s=iport; t=1436382566; x=1437592166; h=from:to:cc:subject:date:message-id:references: in-reply-to:mime-version; bh=cI7jbwS70PRT2zwCiY+/2x76jvFt4c/kwJl8j9vgnJE=; b=DV5pFEg5OBIZi6oTz59LqACCJgWzyLu091RuQLQXraI7BOP8Jv4P1OzC o3ai5RPGO1X18fc/uTM/HZo7UFl7l9zjvpWx3BTctdDA68TPfLbdHgtlT lxdf7wPWl+kMArT0nG78lXVK0HpFUcLHXS1s/tYV25vvO/nGQbaSvgYqM 0=;
X-Files: signature.asc : 833
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: A0BcAwBvdJ1V/5FdJa1cgxKBOr1LCYdmAoFcOBQBAQEBAQEBgQqEJAEBBHkQAgEIRjIlAgQOE4ggzhoBAQEBAQEBAQEBAQEBAQEBAQEBAQEXi0uFBgeDF4EUBZE9gmYBgiyBVId9gTuEGI8wg18mggwcgVOCNoEEAQEB
X-IronPort-AV: E=Sophos;i="5.15,433,1432598400"; d="asc'?scan'208";a="166790606"
Received: from rcdn-core-9.cisco.com ([173.37.93.145]) by alln-iport-5.cisco.com with ESMTP; 08 Jul 2015 19:09:25 +0000
Received: from xhc-rcd-x03.cisco.com (xhc-rcd-x03.cisco.com [173.37.183.77]) by rcdn-core-9.cisco.com (8.14.5/8.14.5) with ESMTP id t68J9Odm012470 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 8 Jul 2015 19:09:24 GMT
Received: from xmb-rcd-x09.cisco.com ([169.254.9.49]) by xhc-rcd-x03.cisco.com ([173.37.183.77]) with mapi id 14.03.0195.001; Wed, 8 Jul 2015 14:09:24 -0500
From: "Fred Baker (fred)" <fred@cisco.com>
To: "draft-yc-v6ops-solicited-ra-unicast@tools.ietf.org" <draft-yc-v6ops-solicited-ra-unicast@tools.ietf.org>
Thread-Topic: [v6ops] new draft: draft-yc-v6ops-solicited-ra-unicast
Thread-Index: AQHQubGaJQ06k0kTHEW5THWdn9BT9A==
Date: Wed, 08 Jul 2015 19:09:24 +0000
Message-ID: <51672618-A36C-4162-A4E1-7E7D57F6326D@cisco.com>
References: <201507071147.t67Bl13m009348@irp-lnx1.cisco.com>
In-Reply-To: <201507071147.t67Bl13m009348@irp-lnx1.cisco.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [10.19.64.123]
Content-Type: multipart/signed; boundary="Apple-Mail=_2EBA5662-25D3-41E7-9682-7BA15690A5EC"; protocol="application/pgp-signature"; micalg="pgp-sha1"
MIME-Version: 1.0
Archived-At: <http://mailarchive.ietf.org/arch/msg/v6ops/wW92KOjMpQy3VfbMjXJ14eQozVc>
Cc: v6ops list <v6ops@ietf.org>
Subject: Re: [v6ops] new draft: draft-yc-v6ops-solicited-ra-unicast
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: v6ops discussion list <v6ops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/v6ops>, <mailto:v6ops-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/v6ops/>
List-Post: <mailto:v6ops@ietf.org>
List-Help: <mailto:v6ops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/v6ops>, <mailto:v6ops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 08 Jul 2015 19:09:27 -0000
Lorenzo and Andrew: I'm trying to figure out how to unjam the Prague agenda, and I wonder if this (very simple) draft can be sorted out on the list before the event. We already have two supportive comments. I'll note that what you describe for IPv6 is pretty common in IPv4 today - and I have it in my head it is common in IPv6 today. What I think you're saying is "please make it common if it's not". RFC 4861, section 6.2.6, says: In addition to sending periodic, unsolicited advertisements, a router sends advertisements in response to valid solicitations received on an advertising interface. A ROUTER MAY CHOOSE TO UNICAST THE RESPONSE DIRECTLY TO THE SOLICITING HOST'S ADDRESS (if the solicitation's source address is not the unspecified address), but the usual case is to multicast the response to the all-nodes group. In the latter case, the interface's interval timer is reset to a new random value, as if an unsolicited advertisement had just been sent (see Section 6.2.4). emphasis mine. Your draft says, if I may summarize in two sentences, "routers that don't send unicast RAs in response to an RS cost the network and its hosts a lot of resources" and "please send RAs unicast unless there is a good reason not to, such as a periodic RA". Correct? If I were to give you an agenda slot, did I just say everything (modulo perhaps a supporting graphic) that you would say? Presuming the answer to be "yes", let me propose a short-circuit process. I would invite immediate discussion - do we agree with this? Is there an alternative viewpoint we're missing? Are there other cases the draft should address (it's primarily about mobile, but I would submit it is relevant to any shared L2 infrastructure, which could describe data centers and WiFi networks)? BTW, chair hat off, I would suggest that your proposed configuration knob default to "send unicast", not "send multicast". Take that as you see fit. I have been wrong before. Given an avalanche of "yes, and let's make it a WG document, but here's a comment", I'd suggest that - I don't give the authors a meeting slot - We accept this as a working group document - The authors post the updated draft as draft-ietf-v6ops-solicited-ra-unicast in August - I run a WGLC in September - we ship it
- [v6ops] new draft: draft-yc-v6ops-solicited-ra-un… fred
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Kline
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Tore Anderson
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Fred Baker (fred)
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Fred Baker (fred)
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Fred Baker (fred)
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Ole Troan
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Fred Baker (fred)
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Kline
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Andrew Yourtchenko
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Jen Linkova
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Kline
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Nordmark
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Tarko Tikan
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Sri Gundavelli (sgundave)
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Andrew 👽 Yourtchenko
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Gert Doering
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Ole Troan
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Kline
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Gert Doering
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Hemant Singh (shemant)
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Owen DeLong
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Nabil Benamar
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alejandro Acosta
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Andrew 👽 Yourtchenko
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Andrew 👽 Yourtchenko
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Jen Linkova
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Andrew 👽 Yourtchenko
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Jared Mauch
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Nabil Benamar
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Alexandru Petrescu
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Gert Doering
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Lorenzo Colitti
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Owen DeLong
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Owen DeLong
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Owen DeLong
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Nordmark
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Nordmark
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Nordmark
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Owen DeLong
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Andrew 👽 Yourtchenko
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Andrew 👽 Yourtchenko
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Ole Troan
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Nordmark
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Erik Nordmark
- Re: [v6ops] new draft: draft-yc-v6ops-solicited-r… Mark Smith