Problems with delegating zones outside of Bind

[Léonard Wauters]

Hello,

It could be a solution, but I did not understand how to do that. I'm 
still new at DNS, and I could not find any example of a zone file 
implementing this.

Do you know where can I find some example ?

Thanks very much,

Léonard Wauters.
bdyslm at comcast.net wrote:

>Why not just delegate the modems.company.priv zone to the power dns servers through NS records? 
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> -------------- Original message ----------------------
>From: Léonard Wauters <lwauters at ipnotic-telecom.fr>
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>>Hello,
>>
>>We heavily use bind inside our company for mapping our different servers 
>>and caching our own DNS requests.
>>We have two DNS servers (Bind 9.2.4.1) running over Debian Sarge, and 
>>everything is working well.
>>
>>We have several zones, defined like this :
>>
>>// Zone company.priv
>>zone "sup.ipnotic.priv" IN {
>>        type master;
>>        file "/etc/bind/db.sup.company.priv";
>>        allow-update { none; };
>>};
>>
>>// Zone srvc.company.priv
>>zone "srvc.ipnotic.priv" IN {
>>        type master;
>>        file "/etc/bind/db.srvc.company.priv";
>>};
>>
>>// Zone bbone.company.priv
>>zone "bbone.ipnotic.priv" IN {
>>        type master;
>>        file "/etc/bind/db.bbone.company.priv";
>>        allow-update { none; };
>>};
>>
>>
>>We want to add a new zone, say 'modems', but we do not want bind to 
>>handle it, because we have to use a SQL back-end. So we want to use 
>>powerdns which would store the ressource records, and Bind as a "proxy" 
>>that would ask powerdns for results.
>>Powerdns runs on both master and slave DNS, but on port 1053.
>>
>>(My master DNS server is 10.10.0.40 and my slave is 10.10.0.46)
>>
>>So we added the following zone :
>>// New zone
>>zone "modems.company.priv" IN {
>>        type forward;
>>        forward only;
>>        forwarders { 10.10.0.40 port 1053;
>>                     10.10.0.46 port 1053; };
>>};
>>
>>So, in this configuration, Bind handles all requests (even for the 
>>modems.company.priv) and asks for powerdns when a query concerns the 
>>modems.company.priv zone.
>>
>>But, it is not the case. Bind never interrogates the powerdns server on 
>>port 1053 for, for instance, a modem1.modems.company.priv A query. It 
>>only returns a NXDOMAIN error code.
>>
>>The logs do not return any noticeable error. I also did a tcpdump on 
>>both master and slaves, and there is NO actual communication between 
>>bind and powerDNS. By the way, if I interrogate directly powerdns on 
>>port 1053, I get the expected results.
>>
>>I searched some examples on the internet, but could not find anything.
>>
>>Maybe dealing with the PTR and NS ressource records would be a solution, 
>>but I could find no examples of it.
>>
>>Do someone have an example of how to do this ?
>>
>>Thanks for your answers.
>>
>>Léonard Wauters.
>>
>>
>>-- 
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