void zebra_nhg_decrement_ref(struct nhg_hash_entry *nhe);
void zebra_nhg_increment_ref(struct nhg_hash_entry *nhe);
-void zebra_nhg_set_invalid(struct nhg_hash_entry *nhe);
+void zebra_nhg_check_valid(struct nhg_hash_entry *nhe);
void zebra_nhg_set_if(struct nhg_hash_entry *nhe, struct interface *ifp);
extern int nexthop_active_update(struct route_node *rn, struct route_entry *re);