Re: [Doh] [Ext] DNS Camel thoughts: TC and message size

Paul Hoffman <paul.hoffman@icann.org> Thu, 07 June 2018 13:51 UTC

Return-Path: <paul.hoffman@icann.org>
X-Original-To: doh@ietfa.amsl.com
Delivered-To: doh@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9380E13112D for <doh@ietfa.amsl.com>; Thu, 7 Jun 2018 06:51:37 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.2
X-Spam-Level:
X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
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 ZiMfbhuKKE0c for <doh@ietfa.amsl.com>; Thu, 7 Jun 2018 06:51:34 -0700 (PDT)
Received: from out.west.pexch112.icann.org (pfe112-ca-2.pexch112.icann.org [64.78.40.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8D18E13112A for <doh@ietf.org>; Thu, 7 Jun 2018 06:51:34 -0700 (PDT)
Received: from PMBX112-W1-CA-1.pexch112.icann.org (64.78.40.21) by PMBX112-W1-CA-2.pexch112.icann.org (64.78.40.23) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 7 Jun 2018 06:51:32 -0700
Received: from PMBX112-W1-CA-1.pexch112.icann.org ([64.78.40.21]) by PMBX112-W1-CA-1.PEXCH112.ICANN.ORG ([64.78.40.21]) with mapi id 15.00.1367.000; Thu, 7 Jun 2018 06:51:32 -0700
From: Paul Hoffman <paul.hoffman@icann.org>
To: Tony Finch <dot@dotat.at>
CC: DoH WG <doh@ietf.org>
Thread-Topic: [Doh] [Ext] DNS Camel thoughts: TC and message size
Thread-Index: AQHT/kr9sCZvhcrcI0uOMRalB8RQXqRVQvMAgAACLACAAADrgA==
Date: Thu, 7 Jun 2018 13:51:31 +0000
Message-ID: <1525C798-A267-492A-8B21-FE3D02A15415@icann.org>
References: <20180606093212.GA23880@server.ds9a.nl> <alpine.DEB.2.11.1806061501340.10764@grey.csi.cam.ac.uk> <F5774061-35B9-477F-ADDA-8BB3472F30EF@icann.org> <alpine.DEB.2.11.1806071121350.1809@grey.csi.cam.ac.uk> <5B71AC15-80F4-427B-BABA-1BE3C514145F@icann.org> <alpine.DEB.2.11.1806071447040.1809@grey.csi.cam.ac.uk>
In-Reply-To: <alpine.DEB.2.11.1806071447040.1809@grey.csi.cam.ac.uk>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-ms-exchange-messagesentrepresentingtype: 1
x-ms-exchange-transport-fromentityheader: Hosted
x-originating-ip: [192.0.32.234]
Content-Type: text/plain; charset="us-ascii"
Content-ID: <B4C165E0F01A0D4EA76C504F672814D3@pexch112.icann.org>
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Archived-At: <https://mailarchive.ietf.org/arch/msg/doh/FXp7N1KWTdwTtAX9w-_lWGWsMio>
Subject: Re: [Doh] [Ext] DNS Camel thoughts: TC and message size
X-BeenThere: doh@ietf.org
X-Mailman-Version: 2.1.26
Precedence: list
List-Id: DNS Over HTTPS <doh.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/doh>, <mailto:doh-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/doh/>
List-Post: <mailto:doh@ietf.org>
List-Help: <mailto:doh-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/doh>, <mailto:doh-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 07 Jun 2018 13:51:38 -0000

On Jun 7, 2018, at 6:48 AM, Tony Finch <dot@dotat.at>; wrote:
> 
> Paul Hoffman <paul.hoffman@icann.org>; wrote:
>> 
>>> EDNS buffer sizes need to be handled the samee as for TCP as well.
>> 
>> RFC 6891 says that the payload size is for transport over UDP, not TCP.
>> What change are you requesting here?
> 
> An explicit note that it doesn't apply to HTTP either. Maybe that is
> obvious enough from RCF 6891 that it doesn't need restating?

Ah, *doesn't apply*. Sure, if we're adding a note with the max length, this clarification is probably good as well.

--Paul Hoffman