options {
      directory "/var/bind";
      listen-on { 127.0.0.1; };
      listen-on-v6 { none; };
      allow-transfer {
            none;
      };
      // If you have problems and are behind a firewall:
      query-source address * port 53;
      pid-file "/var/run/named/named.pid";
      allow-recursion { none; };
      recursion no;
};

zone "etcd.local" IN {
      type master;
      file "/etc/bind/etcd.zone";
};

zone "0.0.127.in-addr.arpa" {
      type master;
      file "/etc/bind/rdns.zone";
};