Fix static route for DNS from DHCP servers.

Author: jim-p

sbin/dhclient-script

@@ -189,7 +189,7 @@ add_new_resolv_conf() {
 			# so that mulitple wans work correctly with multiple dns
 			# also backup the nameserver for later route removal
 			echo $nameserver >>/var/etc/nameserver_$interface
-			route add $nameserver -if $interface
+			route add $nameserver -iface $interface
 		done
 		echo $new_domain_name >/var/etc/defaultdomain.conf
 	fi