view "view-internal" {
  match-clients {
    "acl-internal";
  };
  allow-recursion {
    any;
  };
  also-notify {
    "masters-example.com-internal";
  };
  allow-transfer {
    key "key-internal";
  };
  allow-update {
    key "key-internal";
  };

  include "/etc/bind/named.conf.default-zones";
  include "/etc/bind/zones.rfc1918";
  include "/etc/bind/zones/named.conf.local.common";
  include "/etc/bind/zones/named.conf.local.internal";
};

view "view-external" {
  match-clients {
    "acl-external";
  };
  allow-recursion {
    none;
  };
  also-notify {
    "masters-example.com-external";
  };
  allow-transfer {
    key "key-external";
  };
  allow-update {
    key "key-external";
  };

  include "/etc/bind/zones/named.conf.local.common";
  include "/etc/bind/zones/named.conf.local.external";
};