diff -Nuar iptables-1.3.1.old/extensions/libipt_conntrack.c iptables-1.3.1/extensions/libipt_conntrack.c
--- iptables-1.3.1.old/extensions/libipt_conntrack.c	2005-02-19 11:19:17.000000000 -0800
+++ iptables-1.3.1/extensions/libipt_conntrack.c	2005-03-08 23:22:10.342926831 -0800
@@ -9,6 +9,7 @@
 #include <getopt.h>
 #include <ctype.h>
 #include <iptables.h>
+#include <linux/types.h> // for u8
 #include <linux/netfilter_ipv4/ip_conntrack.h>
 #include <linux/netfilter_ipv4/ip_conntrack_tuple.h>
 /* For 64bit kernel / 32bit userspace */