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Subject[PATCH 4.8 16/49] net: icmp6_send should use dst dev to determine L3 domain
4.8-stable review patch.  If anyone has any objections, please let me know.


From: David Ahern <>

[ Upstream commit 5d41ce29e3b91ef305f88d23f72b3359de329cec ]

icmp6_send is called in response to some event. The skb may not have
the device set (skb->dev is NULL), but it is expected to have a dst set.
Update icmp6_send to use the dst on the skb to determine L3 domain.

Fixes: ca254490c8dfd ("net: Add VRF support to IPv6 stack")
Signed-off-by: David Ahern <>
Signed-off-by: David S. Miller <>
Signed-off-by: Greg Kroah-Hartman <>
net/ipv6/icmp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -448,7 +448,7 @@ static void icmp6_send(struct sk_buff *s
if (__ipv6_addr_needs_scope_id(addr_type))
iif = skb->dev->ifindex;
- iif = l3mdev_master_ifindex(skb->dev);
+ iif = l3mdev_master_ifindex(skb_dst(skb)->dev);

* Must not send error if the source does not uniquely

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