[Pdns-users] How to send NXDOMAIN using pipe backend?

[Aki Tuomi]

On Wed, Jun 17, 2015 at 10:20:31PM -0700, indranil.db wrote:
> Hi,
> 
>    Using pipe backend with unix socket to connect to another process which
> is responsible for sending response of DNS queries.
> In case of NXDOMAIN there are multiple communication between PDNS and the
> backend process. Below are the logs:
> 
> Jun 18 11:09:26 Query: 'Q	abc.com.my.domain.com	IN	SOA	-1	127.0.0.1'
> Jun 18 11:09:26 Query: 'Q	com.my.domain.com	IN	SOA	-1	127.0.0.1'
> Jun 18 11:09:26 Query: 'Q	abc.com.my.domain.com	IN	NS	-1	127.0.0.1'
> Jun 18 11:09:26 Query: 'Q	abc.com.my.domain.com	IN	ANY	-1	127.0.0.1'
> Jun 18 11:09:26 Query: 'Q	*.com.my.domain.com	IN	ANY	-1	127.0.0.1'
> 
> However for cases when response is found then the communications are less.
> here are the logs:
> 
> Jun 18 11:10:40 Query: 'Q	xyz.com.my.domain.com	IN	SOA	-1	127.0.0.1'
> Jun 18 11:10:40 Query: 'Q	xyz.com.my.domain.com	IN	ANY	-1	127.0.0.1'
> 
> Is there anyway we can reduce the NXDOMAIN communication calls and make it
> more faster?
> 
> -- IB
> 
>

To send NXDOMAIN, just reply with END. No DATA.

Aki