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

[David Hawthorne]

They don't share the same cache?  What's the reasoning behind that?

On Jan 26, 2011, at 1:55 AM, bert hubert wrote:

> 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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>> E-Mail: christian.kuehn at mcs.de
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