Re: [DNSOP] CDS polling, was Re: [Ext] Re: Clarifying referrals (#35)

Tony Finch <dot@dotat.at> Wed, 15 November 2017 15:35 UTC

Return-Path: <dot@dotat.at>
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 0D7491204DA for <dnsop@ietfa.amsl.com>; Wed, 15 Nov 2017 07:35:40 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.199
X-Spam-Level:
X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, 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 Z1zUO5FhTnU9 for <dnsop@ietfa.amsl.com>; Wed, 15 Nov 2017 07:35:38 -0800 (PST)
Received: from ppsw-32.csi.cam.ac.uk (ppsw-32.csi.cam.ac.uk [131.111.8.132]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2B89D1200FC for <dnsop@ietf.org>; Wed, 15 Nov 2017 07:35:38 -0800 (PST)
X-Cam-AntiVirus: no malware found
X-Cam-ScannerInfo: http://help.uis.cam.ac.uk/email-scanner-virus
Received: from grey.csi.cam.ac.uk ([131.111.57.57]:46795) by ppsw-32.csi.cam.ac.uk (ppsw.cam.ac.uk [131.111.8.136]:25) with esmtps (TLSv1:ECDHE-RSA-AES256-SHA:256) id 1eEziu-000YQD-1k (Exim 4.89) (return-path <dot@dotat.at>); Wed, 15 Nov 2017 15:35:32 +0000
Date: Wed, 15 Nov 2017 15:35:32 +0000
From: Tony Finch <dot@dotat.at>
To: Paul Wouters <paul@nohats.ca>
cc: Jacques Latour <Jacques.Latour@cira.ca>, "dnsop@ietf.org" <dnsop@ietf.org>
In-Reply-To: <alpine.LRH.2.21.1711142358030.30054@bofh.nohats.ca>
Message-ID: <alpine.DEB.2.11.1711151519460.32058@grey.csi.cam.ac.uk>
References: <20171113014445.ncldrwnuuvluecx7@mx4.yitter.info> <5A08FD96.8030907@redbarn.org> <20171113020736.ga7rzgst2hurb56h@mx4.yitter.info> <5A09068A.3030206@redbarn.org> <20171113032640.tbn7icsllm6jeeny@mx4.yitter.info> <C9AC653C-9A27-4DA3-A0FA-9F1BFD429962@icann.org> <alpine.DEB.2.11.1711131456200.26046@grey.csi.cam.ac.uk> <20171113183004.GA35038@isc.org> <436111CF-FCA8-44A2-B83D-6540DE6D64AC@icann.org> <66BA5F27-B044-459B-A2B2-54221FD768C6@isc.org> <20171113233756.GA37394@isc.org> <alpine.DEB.2.11.1711140941060.14243@grey.csi.cam.ac.uk> <D630AC64.61036%jacques.latour@cira.ca> <alpine.LRH.2.21.1711142358030.30054@bofh.nohats.ca>
User-Agent: Alpine 2.11 (DEB 23 2013-08-11)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset="US-ASCII"
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/2QvAKdrOHACebwh5DReqG4P58kA>
Subject: Re: [DNSOP] CDS polling, was Re: [Ext] Re: Clarifying referrals (#35)
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.22
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: Wed, 15 Nov 2017 15:35:40 -0000

Paul Wouters <paul@nohats.ca> wrote:
> On Tue, 14 Nov 2017, Jacques Latour wrote:
>
> > Personally, I like a mix of #3 and #1, on a regular basis poll the entire
> > zone for changes, and have a mechanism to listen to child notifications
> > for urgent changes.
>
> Agreed.

Yes.

> > _AND_ remember, the preferred method by far is to submit a DS/DNSKEY
> > record is via the RRR EPP model.  The above is when that RRR EPP model is
> > non functional.
>
> That preference might be political not technical. I personally like the
> DNS based solutions over the EPP based one, because it requires no
> humans or webgui's :)

EPP isn't available to most registrants or operators, since it's a
registrar <-> registry protocol -- remember the motivation for CDS/CSYNC
was lack of any operator <-> registrar update protocol, and lack of any
way to provide registrar credentials to DNS operators.

There are plenty of parent zones which don't have an EPP back end -
examples I care about include the reverse DNS, ac.uk, cam.ac.uk, etc.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/  -  I xn--zr8h punycode
South Utsire, Southeast Forties: Northwesterly backing southerly 5 or 6,
increasing 7 or gale 8 later. Moderate or rough. Showers, rain later. Good,
occasionally poor later.