--- a/bin/pvl.hosts-reverse	Thu Feb 26 15:26:26 2015 +0200
+++ b/bin/pvl.hosts-reverse	Thu Feb 26 15:29:03 2015 +0200
@@ -28,14 +28,22 @@
         log.fatal("required --reverse-zone")
         return 1
 
+    if options.unknown_host and not options.hosts_domain:
+        log.fatal("--unknown-host requires --hosts-domain=")
+        return 1
+
     hosts = pvl.hosts.apply(options, args)
 
     # process
     prefix = pvl.dns.parse_prefix(options.reverse_zone)
 
     try:
-        for rr in pvl.hosts.zone.apply_hosts_reverse(options, hosts, prefix):
+        for rr in pvl.hosts.zone.apply_hosts_reverse(hosts, prefix,
+                unknown_host    = options.unknown_host,
+                unknown_domain  = options.hosts_domain,
+        ):
             print unicode(rr)
+
     except pvl.hosts.HostError as error:
         log.error("%s", error)
         return 3