Re: [DNSOP] KSK-Sentinel -- "Walkin' on the SUN"?

Tony Finch <dot@dotat.at> Tue, 15 May 2018 09:53 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 F16F312D86E for <dnsop@ietfa.amsl.com>; Tue, 15 May 2018 02:53:30 -0700 (PDT)
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 OrDKMPwesE5d for <dnsop@ietfa.amsl.com>; Tue, 15 May 2018 02:53:29 -0700 (PDT)
Received: from ppsw-42.csi.cam.ac.uk (ppsw-42.csi.cam.ac.uk [131.111.8.142]) (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 2A49712D7F9 for <dnsop@ietf.org>; Tue, 15 May 2018 02:53:29 -0700 (PDT)
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]:54593) by ppsw-42.csi.cam.ac.uk (ppsw.cam.ac.uk [131.111.8.139]:25) with esmtps (TLSv1:ECDHE-RSA-AES256-SHA:256) id 1fIWe6-000Wnk-8q (Exim 4.89_2) (return-path <dot@dotat.at>); Tue, 15 May 2018 10:53:26 +0100
Date: Tue, 15 May 2018 10:53:26 +0100
From: Tony Finch <dot@dotat.at>
To: Warren Kumari <warren@kumari.net>
cc: dnsop <dnsop@ietf.org>
In-Reply-To: <CAHw9_iKPTT686F8piMGJG=ESnioaunJDTKurabvMA6NucqvBow@mail.gmail.com>
Message-ID: <alpine.DEB.2.11.1805151043220.1809@grey.csi.cam.ac.uk>
References: <CAHw9_iKPTT686F8piMGJG=ESnioaunJDTKurabvMA6NucqvBow@mail.gmail.com>
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/5nqPi48lDPZih-OOxFZk1OXjaZY>
Subject: Re: [DNSOP] KSK-Sentinel -- "Walkin' on the SUN"?
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: Tue, 15 May 2018 09:53:31 -0000

Warren Kumari <warren@kumari.net> wrote:
>
> The authors are in disagreement - RFC6761 talks about "Special-Use Domain
> *Names*", not "Special-Use Domain *Labels*", but Stuart has said that it
> wasn't intended to be only for TLDs / pseudo-TLDs / things starting at the
> top of the tree.

Hmm. I think that if RFC 6761 were supposed to cover arbitrary labels then
it ought to have said something about localhost as a subdomain.

> So, please, *clearly* state if you think that this:
> A: is a SUN
> B: is not a SUN

KSK-sentinel feels like a new kind of thing, but I guess it has a lot in
common with let-localhost-be-localhost. So I think our answer should be
the same for both of them.

My initial reaction was (B), but after I compared with localhost I think
(A) is probably the right answer.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
Humber, Thames, Dover, East Wight: Northerly 5 or 6. Slight or moderate. Fog
patches. Moderate, occasionally very poor.