- The DNS zones do not propagate to the slave DNS server.
- The following error may be seen in slave DNS server logs:
CONFIG_TEXT: ns named: client 203.0.113.2#6887: received notify for zone 'example.com'
ns named: zone example.com/IN: refused notify from non-master: 203.0.113.2#6887
- Private IP has been used for slave DNS extension configuration.
Slave DNS extension misconfiguration.
According to documentation slave DNS should be configured outside of the NAT, thus with public IP.