--- a/src/linux/kernel_routes.c
+++ b/src/linux/kernel_routes.c
@@ -42,6 +42,7 @@
 #include "kernel_routes.h"
 #include "ipc_frontend.h"
 #include "log.h"
+#include <fcntl.h>
 
 /* values for control flag to handle recursive route corrections 
  *  currently only requires in linux specific kernel_routes.c */