Bug#519774: libc6: causes many programs not to be able to resolve dns addresses
Mark Kamichoff a écrit :
> Hi -
>
>> The problem is that the DNS server of your ISP does not conform to the
>> RFC and only answer to the AAAA query with a void answer. It never
>> answer to the A query, so the glibc resolver can only conclude the
>> whole query has no answer.
>
> Just a thought, many DNS ALGs on firewalls (eg, Juniper NetScreen) will
> close the UDP/53 session after one packet (response, presumably) is
> received, and drop any subsequent response packets. It could be that
> the DNS servers are fine, just the firewall protecting it is the
> culprit. I suspect this can be hit or miss due to timing of these
> events.
I don't think this behaviour is allowed by the RFC. Then the problem is
in the firewall and not the DNS, but the result is exactly the same for
the user.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
aurelien@aurel32.net http://www.aurel32.net
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