Re: [DNSOP] Draft for dynamic discovery of secure resolvers

Paul Vixie <paul@redbarn.org> Tue, 21 August 2018 20:09 UTC

Return-Path: <paul@redbarn.org>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B114D130F3B for <dnsop@ietfa.amsl.com>; Tue, 21 Aug 2018 13:09:13 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.901
X-Spam-Level:
X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-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 efniBvn3R9Cs for <dnsop@ietfa.amsl.com>; Tue, 21 Aug 2018 13:09:12 -0700 (PDT)
Received: from family.redbarn.org (family.redbarn.org [24.104.150.213]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5957A130F2F for <dnsop@ietf.org>; Tue, 21 Aug 2018 13:09:12 -0700 (PDT)
Received: from [IPv6:2001:559:8000:c9:9061:ce0d:93bf:336d] (unknown [IPv6:2001:559:8000:c9:9061:ce0d:93bf:336d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by family.redbarn.org (Postfix) with ESMTPSA id 00ADA892C6; Tue, 21 Aug 2018 20:09:10 +0000 (UTC)
Message-ID: <5B7C7164.6000103@redbarn.org>
Date: Tue, 21 Aug 2018 13:09:08 -0700
From: Paul Vixie <paul@redbarn.org>
User-Agent: Postbox 5.0.25 (Windows/20180328)
MIME-Version: 1.0
To: Tom Pusateri <pusateri@bangj.com>
CC: dnsop WG <dnsop@ietf.org>, Vittorio Bertola <vittorio.bertola@open-xchange.com>, David Conrad <drc@virtualized.org>
References: <CAC=TB13mUH2SDxFb4c3rOz0-Z6PE_r9i84_xK=dmLxiVr45+tA@mail.gmail.com> <CAC=TB125M81nwiCTNr8Vbee+Z7Fh_3L+6EdZ8evXVzP-2ji4fg@mail.gmail.com> <CAPt1N1n9hDUZQ-Ltvs73T20=fpG-FR_j-t4m0kMapDiv2Us1kw@mail.gmail.com> <5B78BFB9.40103@redbarn.org> <47508D79-0D49-4F31-9BA6-6DC80C38F1DE@cable.comcast.com> <ad1f6dff-ebcc-97a9-6f4b-1ed683827cc7@dougbarton.us> <1313743534.13562.1534765718802@appsuite.open-xchange.com> <9AFE57A7-1D27-4F86-9013-E3C63E63C582@hopcount.ca> <5B7AE322.3020201@redbarn.org> <CAPt1N1m-Xd-7rvgmk8GOsx34=1hsu76nmTgW-8krC3JF7i57KQ@mail.gmail.com> <265867956.15518.1534783313366@appsuite.open-xchange.com> <CAPt1N1myrdOywur35rXRab2QCrhFiJ0vS4wnT_Pof0epdOPz7A@mail.gmail.com> <471139805.18285.1534847636363@appsuite.open-xchange.com> <FBE862C5-6999-4D2F-A877-4ACDF1F5FBF1@virtualized.org> <5B7C5FDF.9040501@redbarn.org> <384B3B82-8423-45AA-8CC8-14C5D8DE9678@bangj.com> <5B7C683A.9010209@redbarn.org> <DD5A4679-3D7E-4C65-A0C5-5F13AAA845A6@bangj.com>
In-Reply-To: <DD5A4679-3D7E-4C65-A0C5-5F13AAA845A6@bangj.com>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/_PA5Bt4myqU_nRYFbFlS6h2llsI>
Subject: Re: [DNSOP] Draft for dynamic discovery of secure resolvers
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.27
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dnsop/>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 21 Aug 2018 20:09:26 -0000


Tom Pusateri wrote:
...
>> it should follow therefore that i do NOT want to use UDP/53 +
>> Cookies unless there is no alternative. DoT will be preferred.
>> (DTLS or SCTP would be even better, but i'm only picking from items
>> now-on-menu.)
>
> Since you can already do DoT today without an additional DHCP DNS
> option and adding that option will indisputably also come with a DoH
> URI option too, I would think you would be arguing against any new
> DHCP options for consistency.

no, sir. i must have misspoke. i have DoT available, but nothing uses 
it, though i am expecting android 9 ("Pie") which dropped yesterday to 
start opportunistically doing so. if that's the behaviour we want for 
stubs, we should document it instead of adding anything to DHCP.

-- 
P Vixie