The minimum size of an RFC3442 destination descriptor is five bytes, so

correct test to -ge 5.  Without this change an RFC3442 encoded default
route would be ignored.

Reported by:	Cedric Jonas <cedric at decemplex dot net>

sbin/dhclient/dhclient-script

@@ -88,7 +88,7 @@ add_new_alias() {
 
 fill_classless_routes() {
 	set $1
-	while [ $# -gt 5 ]; do
+	while [ $# -ge 5 ]; do
 		if [ $1 -eq 0 ]; then
 			route="default"
 		elif [ $1 -le 8 ]; then