IETF Logo Mail Archive

Re: [DNSOP] On some terminology in draft-ietf-dnsop-respsize (truncation)

Mark Andrews <marka@isc.org> Tue, 04 March 2014 06:42 UTC

Return-Path: <marka@isc.org>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CB1731A038C for <dnsop@ietfa.amsl.com>; Mon, 3 Mar 2014 22:42:30 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.548
X-Spam-Level:
X-Spam-Status: No, score=-2.548 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RP_MATCHES_RCVD=-0.547, SPF_PASS=-0.001] autolearn=ham
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 n07LlnwAOVpE for <dnsop@ietfa.amsl.com>; Mon, 3 Mar 2014 22:42:29 -0800 (PST)
Received: from mx.pao1.isc.org (mx.pao1.isc.org [IPv6:2001:4f8:0:2::2b]) by ietfa.amsl.com (Postfix) with ESMTP id 963801A0361 for <dnsop@ietf.org>; Mon, 3 Mar 2014 22:42:29 -0800 (PST)
Received: from mx.pao1.isc.org (localhost [127.0.0.1]) by mx.pao1.isc.org (Postfix) with ESMTP id E84A4C941E for <dnsop@ietf.org>; Tue, 4 Mar 2014 06:42:12 +0000 (UTC) (envelope-from marka@isc.org)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isc.org; s=dkim2012; t=1393915345; bh=pnYQ0laqlyhmsCAQ52tmODJjKZ+rTt3rt8o3Pw24404=; h=To:From:References:Subject:In-reply-to:Date; b=szxprRoyy1XspwSLVJ16b3wTNz3+ub2fBVI67KShziLzig24M4tjQTuwfX9oVqrPT TIfnMKkMkLAIH2xBfM+a3pYI+wBqviU9Q4ITFS+6dPe5FX5wCLi3ICJ358O5a5VWTl g3tRq1sEPbB/AzoAX9sVgAM7UmL3Rzg9MAsXY2Rs=
Received: from zmx1.isc.org (zmx1.isc.org [149.20.0.20]) by mx.pao1.isc.org (Postfix) with ESMTP for <dnsop@ietf.org>; Tue, 4 Mar 2014 06:42:12 +0000 (UTC) (envelope-from marka@isc.org)
Received: from zmx1.isc.org (localhost [127.0.0.1]) by zmx1.isc.org (Postfix) with ESMTP id B316B160058 for <dnsop@ietf.org>; Tue, 4 Mar 2014 06:43:08 +0000 (UTC)
Received: from rock.dv.isc.org (unknown [149.20.66.86]) by zmx1.isc.org (Postfix) with ESMTPSA id 2E3D316004E for <dnsop@ietf.org>; Tue, 4 Mar 2014 06:43:08 +0000 (UTC)
Received: from rock.dv.isc.org (localhost [IPv6:::1]) by rock.dv.isc.org (Postfix) with ESMTP id B3BC310AB091 for <dnsop@ietf.org>; Tue, 4 Mar 2014 17:32:09 +1100 (EST)
To: "dnsop@ietf.org WG" <dnsop@ietf.org>
From: Mark Andrews <marka@isc.org>
References: <20140303105138.GA3875@laperouse.bortzmeyer.org> <53149C57.1040105@redbarn.org> <C9C88C7D-E43E-4687-961F-980A4839F561@virtualized.org> <5314CE01.3030806@redbarn.org> <20140303185223.GE5406@mx1.yitter.info> <8FC1D512-79BB-49DD-AE89-A88C7F1F73C6@gmail.com>
In-reply-to: Your message of "Mon, 03 Mar 2014 14:00:23 -0500." <8FC1D512-79BB-49DD-AE89-A88C7F1F73C6@gmail.com>
Date: Tue, 04 Mar 2014 17:32:09 +1100
Message-Id: <20140304063209.B3BC310AB091@rock.dv.isc.org>
X-DCC--Metrics: post.isc.org; whitelist
Archived-At: http://mailarchive.ietf.org/arch/msg/dnsop/zhdDeP_jDsLW_eSCuNcTVijZlOg
Subject: Re: [DNSOP] On some terminology in draft-ietf-dnsop-respsize (truncation)
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.15
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: <http://www.ietf.org/mail-archive/web/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, 04 Mar 2014 06:42:31 -0000

With RFC 103[45] DNS TC=1 indicated that the last section with content
is incomplete and earlier sections are complete.  You can have TC=1
for failure to add glue records to the additional section in a
referral.  *Glue records are not optional in a referral.*

With more modern DNS you need to remove the OPT/SIG(0)/TSIG records
first then the examine the resulting message to find the incomplete
message.  If you are using OPT/SIG(0)/TSIG you are required to
reserve space for those records when constructing the reply.

If you are paranoid or lazy you just retry on TC=1.  named is lazy
in this respect.

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

v2.23.0 | Report a Bug | By Email