[Pdns-users] Recursive lookups over IPv6 failing

bert hubert bert.hubert at netherlabs.nl
Mon Apr 5 17:16:34 UTC 2010

On Mon, Apr 05, 2010 at 11:11:50AM -0600, Brielle Bruns wrote:
> >The way I read your message was that it always fails via IPv6, but never via
> >IPv4 - can you elaborate a bit?
> >
> >The default 'allow all' for IPv4 recursion may have been a mistake, a
> >mistake we're not repeating for IPv6.
> During testing, it was failing 2 out of 3 queries in a row over IPv6.  IE:
> www.aol.com ->  SERVFAIL
> www.aol.com ->  SERVFAIL
> www.aol.com ->

It may be that the answer was in the packet cache. PowerDNS does not check
'allow-recurse' before consulting the packet cache - since it would not save
any work.

> allow-recursion=,::/0
> Started working every time.

This is probably a non-bug. At most a 'quirk'.


More information about the Pdns-users mailing list