[Pdns-users] How to avoid to be redirected to ad by my ISP if NXDOMAIN?

Ton van Rosmalen ton at netbase.nl
Fri Nov 13 05:56:42 UTC 2009


Hi Gerhard,

Gerhard Gaußling schreef:
> Am Donnerstag, 12. November 2009 schrieben Sie:
>   
>> On Thu, Nov 12, 2009 at 09:14:28PM +0100, Gerhard Gaußling wrote:
>>     
>>> ~$ dig gogle.gom
>>>       
>> This is very strange. Are you 100% sure the question is being
>> processed by your local PowerDNS Recursor?
>>
>> Most NXDOMAIN redirection setups do not actively intercept non-RD DNS
>> packets.
>>
>> Can you show the output of your Recursor running in '--trace' mode
>> when answering a question for 'gogle.gom'?
>>     
>
> I think you're right, but what processes the question then? When I stop 
> the recursor I get the same output.
>
> But I don't understand how to trace the output. I get no messages and no 
> logfiles:
>
> Nov 12 23:59:50 Calling daemonize, going to background
> gerhard at ubuntu:~$ 
> gerhard at ubuntu:~$ ps axu|grep recu
> root     20642  0.0  0.0  12704  1416 ?        Ss   Nov12   0:00 
> pdns_recursor --local-address=172.16.240.1 --allow-from=172.16.240.1/8 --daemon --trace
>
> Now sometimes I don't get those responses: 
>
> ~$ dig ggfj.gm @localhost
>
> <snip>
>
> gerhard at ubuntu:~$ lynx --dump ggfjjk.gom
>    FRAME:
>    
> [1]http://navigationshilfe.t-online.de/dnserror?url=http://www.ggfjjk.g
>    om.com/
>
> <snip>
> why?
>
>   
What is the contents of the /etc/resolv.conf file?
The dig @localhost queries the local recursor. Lynx uses the settings of
resolv.conf.
If your ISP-nameservers are in the resolv.conf (perhaps via dhcp?) that
could explain the issue your seeing.

Regards,

Ton



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