[BEHAVE] DNS64: SERVFAIL on AAAA query, but A record available

Simon Perreault <simon.perreault@viagenie.ca> Wed, 16 December 2009 16:27 UTC

Return-Path: <simon.perreault@viagenie.ca>
X-Original-To: behave@core3.amsl.com
Delivered-To: behave@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id BEDE13A69E0 for <behave@core3.amsl.com>; Wed, 16 Dec 2009 08:27:25 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.524
X-Spam-Level:
X-Spam-Status: No, score=-2.524 tagged_above=-999 required=5 tests=[AWL=0.076, BAYES_00=-2.599, NO_RELAYS=-0.001]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1QL48MMAxvxP for <behave@core3.amsl.com>; Wed, 16 Dec 2009 08:27:25 -0800 (PST)
Received: from jazz.viagenie.ca (jazz.viagenie.ca [IPv6:2620:0:230:8000::2]) by core3.amsl.com (Postfix) with ESMTP id 761283A69F3 for <behave@ietf.org>; Wed, 16 Dec 2009 08:27:24 -0800 (PST)
Received: from momo-2.local (unknown [IPv6:2620:0:230:c000:20a:95ff:febc:7f66]) by jazz.viagenie.ca (Postfix) with ESMTPSA id 76D7B21BBC for <behave@ietf.org>; Wed, 16 Dec 2009 11:27:10 -0500 (EST)
Message-ID: <4B290A5D.1040700@viagenie.ca>
Date: Wed, 16 Dec 2009 11:27:09 -0500
From: Simon Perreault <simon.perreault@viagenie.ca>
User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812)
MIME-Version: 1.0
To: Behave WG <behave@ietf.org>
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 7bit
Subject: [BEHAVE] DNS64: SERVFAIL on AAAA query, but A record available
X-BeenThere: behave@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: mailing list of BEHAVE IETF WG <behave.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/behave>, <mailto:behave-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/behave>
List-Post: <mailto:behave@ietf.org>
List-Help: <mailto:behave-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/behave>, <mailto:behave-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 16 Dec 2009 16:27:25 -0000

Hello,

Today I attended the interim meeting on WebEx over NAT64. I had only one
problem: a AAAA query for ciscosales.webex.com returns SERVFAIL, but an
A query is successful.

Now, section 5.1.2 prevents the DNS64 from synthesizing a record in this
situations.

What to do? Try an A query even when the AAAA query fails?

In my case, I just edited /etc/hosts... ;)

Simon
-- 
DNS64 open-source   --> http://ecdysis.viagenie.ca
STUN/TURN server    --> http://numb.viagenie.ca
vCard 4.0           --> http://www.vcarddav.org