On 10/30/2018 10:32 AM, Cong Wang wrote:

Unlike Pawel's case, we don't use vlan at all, maybe this is why we see
it much less frequently than Pawel.

Also, it is probably not specific to mlx5, as there is another report which
is probably a non-mlx5 driver.

Not sure if you provided a stack trace ?

Have you tried IPv6 frags maybe ?