diff --git a/src/sys/net/core/netif.c b/src/sys/net/core/netif.c
index 1c61ea1..7736bd4 100644
--- a/src/sys/net/core/netif.c
+++ b/src/sys/net/core/netif.c
@@ -45,6 +45,8 @@
 struct netif *netif_list = NULL;
 struct netif *netif_default = NULL;
 
+struct route_cache *route_cache_list = NULL;
+
 /*-----------------------------------------------------------------------------------*/
 struct netif *
 netif_add(struct ip_addr *ipaddr, struct ip_addr *netmask,
@@ -143,3 +145,9 @@
   netif_list = netif_default = NULL;
 }
 /*-----------------------------------------------------------------------------------*/
+/* initialize the Route Cache */
+void
+route_cache_init(void)
+{
+  route_cache_list = NULL;
+}