[Pdns-users] Strange problem with powerdns and keepalived

Rory Toma rory at ooma.com
Tue Jan 24 14:22:22 UTC 2012

On 1/24/2012 12:42 AM, Marc Haber wrote:
> On Mon, Jan 23, 2012 at 05:42:16PM -0800, Rory Toma wrote:
>> I'm not sure that this is a powerdns problem, per se, but it seems
>> to only affect powerdns.
>> I have a keepalived setup using a /16 network. When pdns binds to
>> the keepalived port, udp queries work just fine, but tcp queries
>> fail with a "tcp port domain unreachable".
> Can PowerDNS cope with an IP address being configured after PowerDNS
> was started? What does netstat say wrt listening ports?
Yes, my keepalived and powerdns startup scripts add the IP address in 
for listening. Both UDP and TCP port 53 show up in netstat.
>> I have an exact duplicate of this setup using /24's, and everything
>> works fine.
> Which prompts the question, why are you using a /16? I have never seen
> a LAN this large.
Because I inherited it, and undoing it is not feasible at the moment.
>> Is there some obscure setting I'm missing? I'm running pdns
>> (I can't upgrade to newer because I rely on a specific behavior in
>> this version)
> Just out of curiosity: Which specific behavior?
I need it to forward queries, even queries where power dns is SOA, to 
another name server.
> Greetings
> Marc

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