zone "dynamic.dehnerts.com" IN { // secondary is equivalent, starting in bind-9.15.8 // https://github.com/isc-projects/bind9/commit/79c2400d91b818e66a45494784cea17f46e807f2 type secondary; file "/var/lib/bind/dynamic.dehnerts.zone"; masters { "primary-ns"; }; allow-query { any; }; };