$OpenBSD: patch-src_pf_c,v 1.1 2015/01/23 13:01:16 naddy Exp $
--- src/pf.c.orig	Sun Jan 26 09:09:14 2014
+++ src/pf.c	Fri Jan 23 13:22:31 2015
@@ -29,6 +29,7 @@
 # include <net/if.h>
 #endif
 
+#include <netinet/in.h>
 #include <net/pfvar.h>
 
 #ifndef FCNT_NAMES
