--- zzzz-none-000/linux-4.4.60/include/net/route.h	2017-04-08 07:53:53.000000000 +0000
+++ dragonfly-4020-701/linux-4.4.60/include/net/route.h	2018-11-08 13:36:17.000000000 +0000
@@ -210,6 +210,9 @@
 int ip_rt_ioctl(struct net *, unsigned int cmd, void __user *arg);
 void ip_rt_get_source(u8 *src, struct sk_buff *skb, struct rtable *rt);
 
+int ip_rt_register_notifier(struct notifier_block *nb);
+int ip_rt_unregister_notifier(struct notifier_block *nb);
+
 struct in_ifaddr;
 void fib_add_ifaddr(struct in_ifaddr *);
 void fib_del_ifaddr(struct in_ifaddr *, struct in_ifaddr *);