[    1.990363] ip (246) used greatest stack depth: 12376 bytes left
[    2.668773] ip (280) used greatest stack depth: 12360 bytes left
[    2.723292] ip (284) used greatest stack depth: 12344 bytes left
[    2.890792] ip (294) used greatest stack depth: 12192 bytes left
[   15.517960] mpls_gso: MPLS GSO support
[  974.037022] blackhole_netdev_xmit(): Dropping skb.
[  974.037091] blackhole_netdev_xmit(): Dropping skb.
[  974.037124] blackhole_netdev_xmit(): Dropping skb.
[  974.037158] blackhole_netdev_xmit(): Dropping skb.