[    1.932381] ip (247) used greatest stack depth: 12376 bytes left
[    2.530963] ip (281) used greatest stack depth: 12344 bytes left
[   15.049137] mpls_gso: MPLS GSO support
[   27.423732] ip (2621) used greatest stack depth: 12176 bytes left
[  669.177050] blackhole_netdev_xmit(): Dropping skb.
[  669.177133] blackhole_netdev_xmit(): Dropping skb.
[  669.177180] blackhole_netdev_xmit(): Dropping skb.
[  669.177230] blackhole_netdev_xmit(): Dropping skb.