key rndc_key { secret "1234abcd8765"; algorithm @DEFAULT_HMAC@; }; controls { inet 10.53.0.1 port @CONTROLPORT@ allow { any; } keys { rndc_key; }; }; options { query-source address 10.53.0.1; notify-source 10.53.0.1; transfer-source 10.53.0.1; port @PORT@; pid-file "named.pid"; listen-on { 10.53.0.1; }; listen-on-v6 { none; }; allow-transfer { any; }; recursion no; notify yes; dnssec-validation no; }; zone "example" { type primary; file "example.db"; also-notify { 10.53.0.2 port @PORT@; }; ixfr-from-differences yes; };