$OpenBSD: patch-upnppinhole_c,v 1.1 2016/09/10 13:03:42 ajacoutot Exp $
--- upnppinhole.c.orig	Sat Sep 10 12:03:05 2016
+++ upnppinhole.c	Sat Sep 10 12:03:10 2016
@@ -9,6 +9,7 @@
 #include <string.h>
 #include <syslog.h>
 #include <sys/types.h>
+#include <sys/select.h> /* fd_set */
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <net/if.h>