--- watchdog-5.13.orig/src/net.c	2013-02-01 12:15:44.000000000 +0100
+++ watchdog-5.13/src/net.c	2014-03-22 16:18:27.000000000 +0100
@@ -6,6 +6,7 @@
 
 #include <errno.h>
 #include <sys/time.h>
+#include <sys/types.h>
 #include <netinet/ip.h>
 #include <netinet/ip_icmp.h>