Index: isic.h
--- isic.h.orig
+++ isic.h
@@ -6,6 +6,9 @@
 
 #include <libnet.h>
 
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
 #include <netinet/ip_icmp.h>
 #include <netinet/icmp6.h>
 #include <netinet/ip6.h>
