diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 8b84142fd775..4a22d9f23425 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -2511,6 +2511,7 @@ int ipmr_get_route(struct net *net, struct sk_buff *skb,
 		skb_push(skb2, sizeof(struct iphdr));
 		skb_reset_network_header(skb2);
 		iph = ip_hdr(skb2);
+		memset(iph, 0, sizeof(*iph));
 		iph->ihl = sizeof(struct iphdr) >> 2;
 		iph->saddr = saddr;
 		iph->daddr = daddr;