[Pdns-users] recursor: no reverse lookups

[Frank Louwers]

Sig,

First of all it’s best not to use nslookup. It can produce unpredictable and sometimes false results. Please use a tool like “dig” or “drill”.

Is 192.168.94.66#53 the authoritative server for that 94.168.192.in-addr.arp domain? If so, then yes, the result is an authoritative answer, as the auth-server provided that answer.

Your pdns-recursor in front of it, is a recursor,  so the result is non-auth.

Hope this helps…

Frank Louwers


> On 19 Nov 2018, at 09:03, Sig Pam <spam at itserv.de <mailto:spam at itserv.de>> wrote:
> 
> One more thing. Maybe you have a quick idea, I did not run through the docs for that.
>  
> Asking my DNS for a reverse address gives an authoritative answer:
>  
> [root at hallo ~]# nslookup
> > server sixtysix 
> Default server: sixtysix
> Address: 192.168.94.66#53
> > 192.168.94.123
> Server:         sixtysix
> Address:   192.168.94.66#53
>  
> 123.94.168.192.in-addr.arpa     name = fileserver.corp.domain.de <http://fileserver.corp.domain.de/>.
>  
> Asking pdns-recursor is a non-authoritative answer
>  
>  
> > set port=5300
> > 192.168.94.123
> Server:         sixtysix
> Address:   192.168.94.66#5300
>  
> Non-authoritative answer:
> 123.94.168.192.in-addr.arpa     name = fileserver.corp.domain.de <http://fileserver.corp.domain.de/>.
>  
> Authoritative answers can be found from:
>  
> Any quick idea? 
>  
>    Sig
>  
> -----Ursprüngliche Nachricht-----
> Von: Sig Pam 
> Gesendet: Montag, 19. November 2018 08:53
> An: bert hubert <bert.hubert at powerdns.com <mailto:bert.hubert at powerdns.com>>; Sig Pam <spam at itserv.de <mailto:spam at itserv.de>>
> Cc: pdns-users at mailman.powerdns.com <mailto:pdns-users at mailman.powerdns.com>
> Betreff: AW: [Pdns-users] recursor: no reverse lookups
>  
> Bert,
>  
> thank you very much. That seems to be the solution for my issue. I was aware of this switch and played with it sooner, without success. But this was in another test environment, potentially with more hidden problem.
>  
> Great! Again, thank you!
>  
>   Sig
>  
> -----Ursprüngliche Nachricht-----
> Von: bert hubert <bert.hubert at powerdns.com <mailto:bert.hubert at powerdns.com>> 
> Gesendet: Sonntag, 18. November 2018 19:57
> An: Sig Pam <spam at itserv.de <mailto:spam at itserv.de>>
> Cc: pdns-users at mailman.powerdns.com <mailto:pdns-users at mailman.powerdns.com>
> Betreff: Re: [Pdns-users] recursor: no reverse lookups
>  
> On Sun, Nov 18, 2018 at 04:10:52PM +0100, bert hubert wrote:
> > On Sun, Nov 18, 2018 at 03:00:53PM +0000, Sig Pam wrote:
> > > [root at hallo ~]# nslookup - 192.168.94.66
> > > 
> > > > set port=53
> > > 
> > > > 192.168.94.66
>  
> Ok, I see it now, try adding: serve-rfc1918=off
> What you are seeing is that the powerdns recursor is answering your
> 192.168.in-addr.arpa queries itself.
>  
>         Bert
>  
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