diff --git a/net/core/utils.c b/net/core/utils.c
index 07236c1..34f0810 100644
--- a/net/core/utils.c
+++ b/net/core/utils.c
@@ -32,6 +32,8 @@
 
 int net_msg_cost = 5*HZ;
 int net_msg_burst = 10;
+int net_msg_warn = 1;
+EXPORT_SYMBOL(net_msg_warn);
 
 /*
  * All net warning printk()s should be guarded by this function.