[    2.638609] ip (282) used greatest stack depth: 12344 bytes left
[   14.363398] mpls_gso: MPLS GSO support
[  630.143629] ip (29869) used greatest stack depth: 12288 bytes left
[  682.371473] blackhole_netdev_xmit(): Dropping skb.
[  682.371535] blackhole_netdev_xmit(): Dropping skb.
[  682.371568] blackhole_netdev_xmit(): Dropping skb.
[  682.371602] blackhole_netdev_xmit(): Dropping skb.