Re: [DNSOP] RFC 1035 vs. mandatory NS at apex?

Mark Andrews <marka@isc.org> Thu, 07 February 2019 13:10 UTC

Return-Path: <marka@isc.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 3182213112A for <dnsop@ietfa.amsl.com>; Thu, 7 Feb 2019 05:10:56 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.9
X-Spam-Level:
X-Spam-Status: No, score=-6.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, 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 Spa00w7AEsD6 for <dnsop@ietfa.amsl.com>; Thu, 7 Feb 2019 05:10:54 -0800 (PST)
Received: from mx.pao1.isc.org (mx.pao1.isc.org [IPv6:2001:4f8:0:2::2b]) (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 46633130E72 for <dnsop@ietf.org>; Thu, 7 Feb 2019 05:10:54 -0800 (PST)
Received: from zmx1.isc.org (zmx1.isc.org [149.20.0.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx.pao1.isc.org (Postfix) with ESMTPS id 24F273AB066; Thu, 7 Feb 2019 13:10:54 +0000 (UTC)
Received: from zmx1.isc.org (localhost [127.0.0.1]) by zmx1.isc.org (Postfix) with ESMTPS id A8D5F160071; Thu, 7 Feb 2019 13:10:50 +0000 (UTC)
Received: from localhost (localhost [127.0.0.1]) by zmx1.isc.org (Postfix) with ESMTP id 98639160070; Thu, 7 Feb 2019 13:10:50 +0000 (UTC)
Received: from zmx1.isc.org ([127.0.0.1]) by localhost (zmx1.isc.org [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id mZ39HT6Xmdsm; Thu, 7 Feb 2019 13:10:50 +0000 (UTC)
Received: from [172.30.42.67] (c27-253-115-14.carlnfd2.nsw.optusnet.com.au [27.253.115.14]) by zmx1.isc.org (Postfix) with ESMTPSA id 73C74160064; Thu, 7 Feb 2019 13:10:49 +0000 (UTC)
Content-Type: text/plain; charset=utf-8
Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\))
From: Mark Andrews <marka@isc.org>
In-Reply-To: <fcd790a2-414b-491e-01e2-9aa92f7b1c4e@nic.cz>
Date: Fri, 8 Feb 2019 00:10:44 +1100
Cc: "dnsop@ietf.org" <dnsop@ietf.org>
Content-Transfer-Encoding: quoted-printable
Message-Id: <0869E3C6-2362-42CC-BD22-293CB9BF25D6@isc.org>
References: <fcd790a2-414b-491e-01e2-9aa92f7b1c4e@nic.cz>
To: =?utf-8?B?UGV0ciDFoHBhxI1law==?= <petr.spacek@nic.cz>
X-Mailer: Apple Mail (2.3445.9.1)
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/T5M5KoAvmN_kIv44McZZKLiP9o0>
Subject: Re: [DNSOP] RFC 1035 vs. mandatory NS at apex?
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.29
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: Thu, 07 Feb 2019 13:11:07 -0000

> On 7 Feb 2019, at 11:16 pm, Petr Špaček <petr.spacek@nic.cz> wrote:
> 
> Hello dnsop,
> 
> here is a quiz for experienced RFC archeologists:
> 
> https://tools.ietf.org/html/rfc1035#section-5.2
> section 5.2. Use of master files to define zones
> does not mention NS at apex at all, but it does explicitly mention SOA
> at apex. Can it be interpreted as if NS at apex is not mandatory?

No.  Go read RFC 1034.

> Funnily enough
> https://tools.ietf.org/html/rfc1035#section-5.3
> has an example which as NS at apex, but it is not clear from the text above.
> 
> Is it mandatory or not? Should I submit erratum for RFC 1035?
> 
> Thank you for clarification.
> 
> -- 
> Petr Špaček  @  CZ.NIC
> 
> _______________________________________________
> DNSOP mailing list
> DNSOP@ietf.org
> https://www.ietf.org/mailman/listinfo/dnsop

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka@isc.org