--- base-helper.ipv6.org    2012-02-16 11:48:30.780575481 +0100
+++ base-helper.ipv6    2012-02-16 11:43:43.755806057 +0100
@@ -60,6 +60,9 @@
     any)
         res=::0/0
     ;;
+    IPV6_NET_*_DEV)
+        eval res=\"\$$tin_param\"
+    ;;
     IPV6_NET_*_IPADDR)
         do_translate_ip6_net ${tin_param%_IPADDR}
         res=${res%/*}