diff --git a/include/net/route.h b/include/net/route.h
index c0f64b0799d..74167da96dc 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -35,6 +35,10 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
+#define RTF_UP          0x0001   /* Route usable. */
+#define RTF_GATEWAY     0x0002   /* Destination is a gateway. */
+#define RTF_HOST        0x0004   /* Host entry (net otherwise). */
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/
@@ -50,6 +54,7 @@ struct rtentry
                                        * the hop */
   struct sockaddr_storage rt_genmask; /* Network mask defining the sub-net */
   uint16_t rt_flags;
+  FAR char *rt_dev;                   /* Forcing the device at add. */
 };
 
 /****************************************************************************