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-rw-r--r--datapath/linux/compat/ip6_gre.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/datapath/linux/compat/ip6_gre.c b/datapath/linux/compat/ip6_gre.c
index be981cda4..90dddece6 100644
--- a/datapath/linux/compat/ip6_gre.c
+++ b/datapath/linux/compat/ip6_gre.c
@@ -1103,7 +1103,7 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
(ntohs(ipv6_hdr(skb)->payload_len) > skb->len - thoff))
truncate = true;
- if (skb_cow_head(skb, dev->needed_headroom))
+ if (skb_cow_head(skb, dev->needed_headroom ? : t->hlen))
goto tx_err;
t->parms.o_flags &= ~TUNNEL_KEY;