named.conf.local

zone "one.example.com" {
        type master;
        file "/etc/bind/zones/db.one.example.com"; # zone file path
#       allow-transfer { 10.128.20.12; };         # ns2 private IP address - secondary
};

zone "8.10.in-addr.arpa" {
        type master;
        file "/etc/bind/zones/db.10.8";  # 10.8.0/24 subnet
#       allow-transfer { 10.128.20.12; };  # ns2 private IP address - secondary
};