[    1.893122] ip (246) used greatest stack depth: 12376 bytes left
[    1.960075] ip (252) used greatest stack depth: 12328 bytes left
[    9.163622] ip (819) used greatest stack depth: 12192 bytes left
[   15.181363] mpls_gso: MPLS GSO support
[  729.711782] blackhole_netdev_xmit(): Dropping skb.
[  729.711853] blackhole_netdev_xmit(): Dropping skb.
[  729.711890] blackhole_netdev_xmit(): Dropping skb.
[  729.711924] blackhole_netdev_xmit(): Dropping skb.