7388 Support DHCP Client FQDN. Allow IAID/DUID for all v4.

@@ -18,10 +18,11 @@
 #
 # CDDL HEADER END
 #
 #
 # Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
 #
 
 #
 # MAPFILE HEADER START
 #

@@ -102,10 +103,11 @@
     global:
         isc_gethexstring;
         isc_puthexstring;
         __log_close_debug_channels;
         __memactive;
+        __ns_name_pton2;
         p_sockun;
         res_gethostbyname2;
         res_getservers;
         res_nametoclass;
         res_nametotype;