[Pdns-users] possible bug im pdns_recusor's caching.

[Dimitrij Hilt]

Hi,

if one record changes on authoritativ DNS, so pdns with local recusor
pdns_recursor give both records old and new as answer:

Dig output:

host1:~\> dig @dns testzone.de SOA

; <<>> DiG 9.2.4 <<>> @dns testzone.de SOA
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43860
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;testzone.de.               IN      SOA

;; ANSWER SECTION:
testzone.de.        85648   IN      SOA     ns1.testzone.de. hostmaster.testzone.de. 2006012400 28800 7200 604800 86400
testzone.de.        86390   IN      SOA     ns1.testzone.de. hostmaster.testzone.de. 2006012401 28800 7200 604800 86400


Have a look at serial. I'v purged cache from pdns_server and got thist answer too. 
So i think it is a bug in pdns_recursor. After restart from pdns_recursor is answer Ok.

Version is: PowerDNS recursor 2.9.20-svn (C) 2001-2005 PowerDNS.COM BV (Jan 14 2006, 14:53:13, gcc 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu9))

Regards,

Dimi


-- 
Dimitrij Hilt               Schlund + Partner AG 
http://www.schlund.com
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