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

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

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Date: Wed, 16 Dec 2009 11:27:09 -0500
From: Simon Perreault <simon.perreault@viagenie.ca>
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Subject: [BEHAVE] DNS64: SERVFAIL on AAAA query, but A record available
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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

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

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

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