What to report for "refresh: failure trying master ... operation canceled" bug?

[Anand Buddhdev]

On 22/11/2016 00:27, schilling wrote:

> Thanks for the insight.
> I added the following rule
> sudo firewall-cmd --permanent --direct --get-all-rules
> [sudo] password for admin:
> ipv4 filter OUTPUT 0 -d 10.10.10.100 -p tcp -m tcp --dport=53 -j ACCEPT
> where 10.10.10.100 is our DNS master, still receiving the error.

Why have you only allowed TCP port 53? What about UDP port 53? BIND
first sends a UDP query to the master for the zone's SOA record, to
determine if it needs to transfer the zone or not.

Regards,
Anand