diff -ur iptables-1.2.11.orig/extensions/libipt_rpc.c iptables-1.2.11/extensions/libipt_rpc.c
--- iptables-1.2.11.orig/extensions/libipt_rpc.c	2004-09-05 11:27:50.000000000 -0400
+++ iptables-1.2.11/extensions/libipt_rpc.c	2004-09-05 11:41:11.000000000 -0400
@@ -252,7 +252,7 @@
 
 			idup = 0;
 			memset(buf, 0, sizeof(buf));
-			dst = (char *)buf - 1;
+			dst = (char *)buf;
 		}
 	}