diff --git a/zebra/rt_netlink.h b/zebra/rt_netlink.h
index 40fa8eb..63fbbe7 100644
--- a/zebra/rt_netlink.h
+++ b/zebra/rt_netlink.h
@@ -25,6 +25,7 @@
 #ifdef HAVE_NETLINK
 
 #define NL_PKT_BUF_SIZE 8192
+#define NL_DEFAULT_ROUTE_METRIC 20
 
 extern int
 addattr32 (struct nlmsghdr *n, size_t maxlen, int type, int data);