class bind::zones {
        if defined(Class["bind::master"]) {
                $zone_type = "master"
        } else {
                $zone_type = "slave"
        }

        Bind::Zone{
                        masterip        => "1.2.3.4",
                        type            => $zone_type,
        }

        bind::zone{"one.com"]:
                        alsonotify      => ["4.3.2.1"];

                   "two.com":
                        ;

                   "three.com":
                        comment         => "Belongs to Acme inc.";
        }
}