Try to contact the dns servers maintainer using postmaster or any other relevant address.

You can consult about it in ISOC mailing list.

BIND has very nice logging options about lazy and problematic dns servers which can help you prevent these issues.

It's a very common problem in the dns world not related just to IPV6.

Eliezer

On 2/12/2013 12:36 PM, Sandrini Christian (xsnd) wrote:
That is what I guessed as well. But we can not control their DNS and the 
"solution" so far was not to check for AAAA records. It is silly for one domain 
but it is a quite important one that is used a lot.

Not sure if there is any alternatives? I thought that squid 3.2 is doing 
parallel lookups to AAAA and A records?

--
Eliezer Croitoru
http://www1.ngtech.co.il
IT consulting for Nonprofit organizations
eliezer <at> ngtech.co.il

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