--- ip_tables.c	2007-04-06 14:39:08.000000000 -0400
+++ /home/jjezak/ip_tables.c	2007-04-28 02:22:57.000000000 -0400
@@ -2004,6 +2004,11 @@
 							 rev.revision,
 							 target, &ret),
 					"ipt_%s", rev.name);
+		if (ret == -ENOENT) {
+			printk("Unable to load ipt_%s\n", rev.name);
+			return -EPROTONOSUPPORT;
+		}
+
 		break;
 	}