fib_frontend.c.patch

--- ../linux-3.18.27/net/ipv4/fib_frontend.c	2016-08-23 17:15:03.409744225 +0800
+++ ./fib_frontend.c	2016-08-23 17:10:33.723068584 +0800
@@ -108,6 +108,7 @@
 	hlist_add_head_rcu(&tb->tb_hlist, &net->ipv4.fib_table_hash[h]);
 	return tb;
 }
+EXPORT_SYMBOL_GPL(fib_new_table);
 
 struct fib_table *fib_get_table(struct net *net, u32 id)
 {
@@ -130,6 +131,7 @@
 	rcu_read_unlock();
 	return NULL;
 }
+EXPORT_SYMBOL_GPL(fib_get_table);
 #endif /* CONFIG_IP_MULTIPLE_TABLES */
 
 static void fib_flush(struct net *net)