[Pdns-users] TCP Queries always go to the recursor?

[REIBENSCHUH Alfred]

this is a bug in powerdns tcp implementation, i posted a patch for this a
few days ago

--
Alfred Reibenschuh
INFORMATIONS-TECHNOLOGIE AUSTRIA GMBH
Netzwerk-Management
A-1020 Wien, Lassallestrasse 5
T: ++43-1-21717-58947
F: ++43-1-21717-58979
E: alfred.reibenschuh at it-austria.com
W: http://www.it-austria.com <http://www.it-austria.com> 

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> -----Original Message-----
> From: Augie Schwer [mailto:augie.schwer at gmail.com]
> Sent: Thursday, December 14, 2006 1:07 AM
> To: pdns-users at mailman.powerdns.com
> Subject: [Pdns-users] TCP Queries always go to the recursor?
> 
> 
> Is there a reason why TCP queries are always getting sent to the
> recursor (if available) for answers instead of checking for an
> authoritative answer first and then recursing if no authoritative
> answer was found?
> 
> I am able to reproduce this by setting up a bogus zone in our
> authoritative data (MySQL) and watching as I get the correct answer
> for UDP recurse and norecurse queries as well as TCP norecurse
> queries, however I see root referrals for TCP recurse queries. An even
> easier way to see this is to ask for the version.bind :
> 
> [augie at augnix ~]$ dig +short ch txt version.bind @pdns-lab 
> +notcp +norecurse
> "Served by POWERDNS 2.9.21-svn.20061029.908 $Id: packethandler.cc 884
> 2006-08-19 12:32:32Z ahu $"
> 
> [augie at augnix ~]$ dig +short ch txt version.bind @pdns-lab 
> +notcp +recurse
> "Served by POWERDNS 2.9.21-svn.20061029.908 $Id: packethandler.cc 884
> 2006-08-19 12:32:32Z ahu $"
> 
> [augie at augnix ~]$ dig +short ch txt version.bind @pdns-lab 
> +tcp +norecurse
> "Served by POWERDNS 2.9.21-svn.20061029.908 $Id: packethandler.cc 884
> 2006-08-19 12:32:32Z ahu $"
> 
> [augie at augnix ~]$ dig +short ch txt version.bind @pdns-lab 
> +tcp +recurse
> "PowerDNS Recursor 3.1.4-pre2 $Id: pdns_recursor.cc 903 2006-10-21
> 16:26:49Z ahu $"
> 
> I am going to go check the RFC, but does anyone know why this would be
> the case? This is with both PowerDNS recursor and BIND as a recursor.
> 
> 
> -- 
> Augie Schwer    -    Augie at Schwer.us    -    http://schwer.us
> Key fingerprint = 9815 AE19 AFD1 1FE7 5DEE 2AC3 CB99 2784 27B0 C072
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