--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1343,6 +1347,8 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
 	u32 daddr;
 	struct rtable *rt = (struct rtable*)skb->dst;
 
+	memset(&ipc, 0, sizeof(ipc));
+
 	if (ip_options_echo(&replyopts.opt, skb))
 		return;
 
