[    2.145500] ip (269) used greatest stack depth: 12416 bytes left
[    2.189294] ip (272) used greatest stack depth: 12368 bytes left
[   10.710041] ip (845) used greatest stack depth: 12320 bytes left
[   16.741465] mpls_gso: MPLS GSO support
[  720.356096] blackhole_netdev_xmit(): Dropping skb.
[  720.356172] blackhole_netdev_xmit(): Dropping skb.
[  720.356221] blackhole_netdev_xmit(): Dropping skb.
[  720.356262] blackhole_netdev_xmit(): Dropping skb.