[Pdns-users] Recursor: Different answers for the same query

[bert hubert]

On Wed, Jan 26, 2011 at 10:32:19AM +0100, Christian Kuehn wrote:
> any idea why the pdns-recursor 3.3 gives different answers to the same
> query??

Hello!! ;-)

You probably run with threads=2, and one of the threads has had problems
resolving cecilmen.se, and the other hasn't.

3.3.1 which will be released soon tries a bit harder to resolve domains when
timeouts happen, which should reduce this from happening.

But at the root, there is no bug needed to explain what you are seeing.

	Bert

> 
> 
> tks at tks:~$ dig ns cecilmen.se
> 
> ; <<>> DiG 9.7.0-P1 <<>> ns cecilmen.se
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24828
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2
> 
> ;; QUESTION SECTION:
> ;cecilmen.se.			IN	NS
> 
> ;; ANSWER SECTION:
> cecilmen.se.		86126	IN	NS	pns.dtag.de.
> cecilmen.se.		86126	IN	NS	secondary000.dtag.net.
> 
> ;; ADDITIONAL SECTION:
> pns.dtag.de.		86373	IN	A	194.25.0.125
> secondary000.dtag.net.	84792	IN	A	195.244.245.7
> 
> ;; Query time: 0 msec
> ;; SERVER: 212.1.60.5#53(212.1.60.5)
> ;; WHEN: Wed Jan 26 10:28:49 2011
> ;; MSG SIZE  rcvd: 121
> 
> tks at tks:~$ dig ns cecilmen.se
> 
> ; <<>> DiG 9.7.0-P1 <<>> ns cecilmen.se
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 30008
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;cecilmen.se.			IN	NS
> 
> ;; Query time: 0 msec
> ;; SERVER: 212.1.60.5#53(212.1.60.5)
> ;; WHEN: Wed Jan 26 10:28:49 2011
> ;; MSG SIZE  rcvd: 29
> 
> 
> 
> Looks like a bug??
> 
> 
> Cheers
> Christian
> 
> 
> -- 
> Christian Kühn
> (Technical Consultant)
> 
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