[    4.156305] ip (286) used greatest stack depth: 12272 bytes left
[   13.195833] ip (995) used greatest stack depth: 12192 bytes left
[   16.904165] mpls_gso: MPLS GSO support
[  801.694472] blackhole_netdev_xmit(): Dropping skb.
[  801.694535] blackhole_netdev_xmit(): Dropping skb.
[  801.694570] blackhole_netdev_xmit(): Dropping skb.
[  801.694608] blackhole_netdev_xmit(): Dropping skb.