diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index a29adf1..356617f 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -46,5 +46,7 @@
 	int sysctl_icmp_ratelimit;
 	int sysctl_icmp_ratemask;
 	int sysctl_icmp_errors_use_inbound_ifaddr;
+
+	struct timer_list rt_secret_timer;
 };
 #endif