--- iptables-1.4.20.orig/include/linux/netfilter_ipv6/ip6_tables.h	2013-08-06 17:48:43.000000000 +0200
+++ iptables-1.4.20/include/linux/netfilter_ipv6/ip6_tables.h	2013-08-15 17:07:35.250176505 +0200
@@ -16,6 +16,7 @@
 #define _IP6_TABLES_H
 
 #include <linux/types.h>
+#include <sys/types.h>
 
 #include <linux/netfilter_ipv6.h>