diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index a85ae2f7a21cb15502bd69e9c63a1ec29020fa40..8fcf0ed76548a31074293d26a671fbbd9a32845e 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -760,7 +760,10 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev if (dev->header_ops && dev->type == ARPHRD_IPGRE) { gre_hlen = 0; - tiph = (const struct iphdr *)skb->data; + if (skb->protocol == htons(ETH_P_IP)) + tiph = (const struct iphdr *)skb->data; + else + tiph = &tunnel->parms.iph; } else { gre_hlen = tunnel->hlen; tiph = &tunnel->parms.iph;