[    1.949200] ip (246) used greatest stack depth: 12376 bytes left
[    2.596851] ip (280) used greatest stack depth: 12344 bytes left
[   13.827299] ip (1121) used greatest stack depth: 12192 bytes left
[   16.479965] mpls_gso: MPLS GSO support
[  959.385679] blackhole_netdev_xmit(): Dropping skb.
[  959.385753] blackhole_netdev_xmit(): Dropping skb.
[  959.385792] blackhole_netdev_xmit(): Dropping skb.
[  959.385831] blackhole_netdev_xmit(): Dropping skb.