--- pftable.c.orig	Mon Nov 13 13:07:35 2006
+++ pftable.c	Fri Jan 23 13:46:37 2015
@@ -21,6 +21,7 @@
 #include <sys/socket.h>
 #include <sys/queue.h>
 
+#include <netinet/in.h>
 #include <net/if.h>
 #include <net/pfvar.h>