Also this bug affecting on Slave (secondary) DNS servers.
In /opt/configs/nsd/conf/master/ folder there is zone files created. But /opt/configs/nsd/conf/defaults/nsd.master.conf and /opt/configs/bind/conf/defaults/named.master.conf is empty.
Then I think 'localhost,ns2.nameserver.com' should be correct and need fix DNS need to create files on both master and slave servers. How can I fix this? Can you help me. Thanks.