$OpenBSD: patch-upnpredirect_c,v 1.2 2019/03/11 04:06:37 bket Exp $
Index: upnpredirect.c
--- upnpredirect.c.orig
+++ upnpredirect.c
@@ -10,6 +10,7 @@
 #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>
