Index: head/sbin/dhclient/tables.c
===================================================================
--- head/sbin/dhclient/tables.c
+++ head/sbin/dhclient/tables.c
@@ -400,6 +400,7 @@
 	DHO_IRC_SERVER,
 	DHO_STREETTALK_SERVER,
 	DHO_STREETTALK_DA_SERVER,
+	DHO_DHCP_USER_CLASS_ID,
 	DHO_DOMAIN_SEARCH,
 
 	/* Presently-undefined options... */