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Date: Fri, 6 Feb 2004 15:04:01 +0000
From: David Malone <dwmalone@maths.tcd.ie>
To: Guido van Rooij <guido@gvr.org>
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cc: freebsd-current@freebsd.org
Subject: Re: resolver issues: AAAA in ipv4 only environment
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On Fri, Feb 06, 2004 at 03:40:06PM +0100, Guido van Rooij wrote:
> It seems there are a lot of broken named's on the Internet that do not
> answer to AAAA queries.

[Not really answering your question, but...]

I've done some measurements, and it seems about half a percent of
names and nameservers have some problem answering AAAA queries.
Unfortunately, those names crop up alot, as several ad servers have
problems. However, I think Doubliclick are now actually working
toward fixing their name servers (though more people letting them
know what a pain it is would probably help).

I've also written a script that tries to diagnose which name servers
are at fault for a given name:

	http://www.cnri.dit.ie/cgi-bin/check_aaaa.pl

David.