pull in in.h as it sets up some proto defines that iptables relies on
--- include/xtables.h.in+++ include/xtables.h.in@@ -5,6 +5,7 @@#include <sys/types.h>
#include <stdbool.h>
#include <net/if.h>
+#include <netinet/in.h>#include <linux/types.h>
#include <linux/netfilter/x_tables.h>