Re: Stephen Farrell's Discuss on draft-ietf-6man-rdnss-rfc6106bis-15: (with DISCUSS)

Tim Chown <Tim.Chown@jisc.ac.uk> Thu, 19 January 2017 14:52 UTC

Return-Path: <tim.chown@jisc.ac.uk>
X-Original-To: ipv6@ietfa.amsl.com
Delivered-To: ipv6@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9937E12960C for <ipv6@ietfa.amsl.com>; Thu, 19 Jan 2017 06:52:16 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.091
X-Spam-Level:
X-Spam-Status: No, score=-4.091 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, T_DKIM_INVALID=0.01] autolearn=unavailable autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=fail (1024-bit key) reason="fail (message has been altered)" header.d=jisc365.onmicrosoft.com
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 Ds_BXfjI2YpL for <ipv6@ietfa.amsl.com>; Thu, 19 Jan 2017 06:52:10 -0800 (PST)
Received: from eu-smtp-delivery-189.mimecast.com (eu-smtp-delivery-189.mimecast.com [207.82.80.189]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 77F241270B4 for <ipv6@ietf.org>; Thu, 19 Jan 2017 06:52:10 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jisc365.onmicrosoft.com; s=selector1-jisc-ac-uk; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=NE4aTfK/ivAKfGcLYM1JR3YmUuvrPaiV6CG6Z9+8YE4=; b=npcK2IdmDIc5jwgog1RPqz7DwzR5jGnuv3hlw/Qys6FP1RaUjb9vymzL2QdV6dXolYlX/vsKKBk7Mrad51B/fIS+WwH80UR8xf9tV0H/PL2+/nw5zFl2NsbV01bxOtU8pxVCnMGG9l+dg+LldixELTkAE4jpsEwBgyvnTCKZy8w=
Received: from EUR01-VE1-obe.outbound.protection.outlook.com (mail-ve1eur01lp0240.outbound.protection.outlook.com [213.199.154.240]) (Using TLS) by eu-smtp-1.mimecast.com with ESMTP id uk-mta-64-5HkeOHhcOQ6OZqQ7X8LyXA-1; Thu, 19 Jan 2017 14:50:59 +0000
Received: from AM3PR07MB1140.eurprd07.prod.outlook.com (10.163.188.14) by AM3PR07MB1140.eurprd07.prod.outlook.com (10.163.188.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.860.6; Thu, 19 Jan 2017 14:50:57 +0000
Received: from AM3PR07MB1140.eurprd07.prod.outlook.com ([fe80::5989:a034:d099:8480]) by AM3PR07MB1140.eurprd07.prod.outlook.com ([fe80::5989:a034:d099:8480%15]) with mapi id 15.01.0860.012; Thu, 19 Jan 2017 14:50:57 +0000
From: Tim Chown <Tim.Chown@jisc.ac.uk>
To: Suresh Krishnan <suresh.krishnan@ericsson.com>
Subject: Re: Stephen Farrell's Discuss on draft-ietf-6man-rdnss-rfc6106bis-15: (with DISCUSS)
Thread-Topic: Stephen Farrell's Discuss on draft-ietf-6man-rdnss-rfc6106bis-15: (with DISCUSS)
Thread-Index: AQHSclLIkMmLGJegG06MeEhrNwRBb6E/zX6AgAARVYCAAANoAA==
Date: Thu, 19 Jan 2017 14:50:57 +0000
Message-ID: <52F53F9D-CB8C-4CFD-A1CB-67293E727F52@jisc.ac.uk>
References: <148483027733.10394.5733573036724815686.idtracker@ietfa.amsl.com> <677f1f83-a6ea-c03d-565d-33719cb0b924@si6networks.com> <A413E0CD-E53C-4E68-B63B-ABCA70EA3C4F@ericsson.com>
In-Reply-To: <A413E0CD-E53C-4E68-B63B-ABCA70EA3C4F@ericsson.com>
Accept-Language: en-GB, en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-mailer: Apple Mail (2.3259)
x-ms-exchange-messagesentrepresentingtype: 1
x-originating-ip: [2a03:9800:30:0:55c9:c104:4ed4:dfd1]
x-ms-office365-filtering-correlation-id: 7fbd4519-c0c4-4b34-f6c7-08d4407a93ba
x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(22001);SRVR:AM3PR07MB1140;
x-microsoft-exchange-diagnostics: 1; AM3PR07MB1140; 7:DO0LqwCl8Pwj8m+CzwnGXkDTYlBRKgpqI/CQ/LVrrEA7SWR8u+jtGBXTUCX7GMyo5yrMgM+fmdEdfgu+ouTrildvzlW5C1yCSN3XMRULhedvujYHOepFaJm4mC5HHRFscge8SahjEtFefz1u0dTjhKZEAukcBlu+kXWnCTGAQOD3FqDhD6zEo06or+4YQu4dl5YkoXhCjFI/TJ683UhmpBq5i1lbXOV21HcoK4U5OtlI5rL0T3ft4Iqj1Gj5UJpfCuEWmYTvSuLVgmXzPnAZ9I301y10pv134Qr6yrnClnBaBoKfjen5uxnuNlXfPFZw43UOZMzEH4ygwyysDyB7d1oewXpLUIRNzWnjb3YhUVUgfW9XEWHshL52ydId/+0tKfQvxte+vSfUnEp3Yvsd34s6Kj+/EieaUyaqdfspEgivDPCWgM11hx/18RaI9pm7WAbyvtt+NT9ycOKBUfEtHg==; 20:pjLY2Dz9wAkd2DGU2tb1bQhEwroYnVVnSgcGJlQ7wiSUwtM9jto0m8ybQNYDnO2Fg87SLG1m1zuPdi0wo/t369hW8uu4lO+sSoPYtCOO+kInwWB/U5q+MEpvnEQzXoQ+Cp3g1jiHpjj5A9BeJHp4pEcc4zOSgGPieebFxUxMgrc=
x-microsoft-antispam-prvs: <AM3PR07MB11402B93DFA54DC2E30F23D3D67E0@AM3PR07MB1140.eurprd07.prod.outlook.com>
x-exchange-antispam-report-test: UriScan:(37575265505322)(158342451672863)(120809045254105);
x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(6040375)(601004)(2401047)(5005006)(8121501046)(10201501046)(3002001)(6041248)(20161123560025)(20161123555025)(20161123562025)(20161123564025)(6072148); SRVR:AM3PR07MB1140; BCL:0; PCL:0; RULEID:; SRVR:AM3PR07MB1140;
x-forefront-prvs: 0192E812EC
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(6009001)(7916002)(39450400003)(199003)(377454003)(189002)(24454002)(38730400001)(229853002)(39060400001)(86362001)(5660300001)(110136003)(3280700002)(230783001)(36756003)(6916009)(50986999)(101416001)(42882006)(33656002)(2950100002)(76176999)(2900100001)(8676002)(7736002)(5250100002)(2906002)(106356001)(81166006)(81156014)(6512007)(97736004)(305945005)(57306001)(92566002)(4326007)(74482002)(6436002)(50226002)(6116002)(53936002)(6486002)(6506006)(99286003)(8936002)(106116001)(68736007)(6306002)(102836003)(54906002)(83716003)(189998001)(82746002)(3660700001)(105586002)(104396002); DIR:OUT; SFP:1101; SCL:1; SRVR:AM3PR07MB1140; H:AM3PR07MB1140.eurprd07.prod.outlook.com; FPR:; SPF:None; PTR:InfoNoRecords; A:1; MX:1; LANG:en;
spamdiagnosticoutput: 1:99
spamdiagnosticmetadata: NSPM
Content-ID: <2B74C9BBEC04A9438A0F4BD2DA026B62@eurprd07.prod.outlook.com>
MIME-Version: 1.0
X-OriginatorOrg: jisc.ac.uk
X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Jan 2017 14:50:57.3992 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 48f9394d-8a14-4d27-82a6-f35f12361205
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM3PR07MB1140
X-MC-Unique: 5HkeOHhcOQ6OZqQ7X8LyXA-1
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: base64
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/2KFL4_4rOJeLgSNwq71TD-DD8PI>
Cc: 6man WG <ipv6@ietf.org>, Robert Hinden <bob.hinden@gmail.com>, "draft-ietf-6man-rdnss-rfc6106bis@ietf.org" <draft-ietf-6man-rdnss-rfc6106bis@ietf.org>, The IESG <iesg@ietf.org>, Fernando Gont <fgont@si6networks.com>, "Stephen Farrell \(stephen.farrell@cs.tcd.ie\)" <stephen.farrell@cs.tcd.ie>, "6man-chairs@ietf.org" <6man-chairs@ietf.org>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ipv6/>
List-Post: <mailto:ipv6@ietf.org>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 19 Jan 2017 14:52:16 -0000

Hi,

> On 19 Jan 2017, at 14:38, Suresh Krishnan <suresh.krishnan@ericsson.com> wrote:
> 
> Hi Stephen,
> 
>> On Jan 19, 2017, at 8:36 AM, Fernando Gont <fgont@si6networks.com> wrote:
>> 
>> On 01/19/2017 09:51 AM, Stephen Farrell wrote:
>>> Stephen Farrell has entered the following ballot position for
>>> draft-ietf-6man-rdnss-rfc6106bis-15: Discuss
>>> 
>>> When responding, please keep the subject line intact and reply to all
>>> email addresses included in the To and CC lines. (Feel free to cut this
>>> introductory paragraph, however.)
>>> 
>>> 
>>> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
>>> for more information about IESG DISCUSS and COMMENT positions.
>>> 
>>> 
>>> The document, along with other ballot positions, can be found here:
>>> https://datatracker.ietf.org/doc/draft-ietf-6man-rdnss-rfc6106bis/
>>> 
>>> 
>>> 
>>> ----------------------------------------------------------------------
>>> DISCUSS:
>>> ----------------------------------------------------------------------
>>> 
>>> 
>>> I think this is the first "configure my DNS" thing to come
>>> before the IESG since DPRIVE has gotten an output, so it seems
>>> fair to ask now:
>>> 
>>> Why doesn't the DNS server information include a port now that
>>> we have both 53 and 853 as options?  Without that, how is a
>>> host supposed to know which to use? Did the WG consider
>>> DPRIVE? If so, what was the conclusion? If not, what is the
>>> right thing to do? (Add the port no? Define a new DHCPv6 option
>>> for DNS/TLS? Something else?)
> 
> I think you have a fair point but it was not really within scope of what the WG wanted to accomplish with this document (which is to fix some issues that were discovered during implementation/deployment). 

>> FWIW, this is a revision of an existing standard, aimed at fixing known
>> problems. Giving how critical it is to IPv6 deployment to convey DNS
>> information, I'd personally expect that something like you suggest
>> (which is sensible), would be done in a separate document -- e.g., in a
>> brand-new option.
> 
> Yes. Given that this fixes some important issues like DNS information expiry on lossy links as well as reduction of unnecessary multicast traffic, I would hate to hold this document up. I would much rather have a separate document that extends this option with port info.

I agree, as you’d then also (I presume) be needing to extend DHCPv6 options to support conveying the same information, so could cover off both methods in one doc in a similar way to the RFC7710 "Rick Roll" option.

Tim