[    1.906231] ip (244) used greatest stack depth: 12376 bytes left
[    2.537396] ip (278) used greatest stack depth: 12344 bytes left
[   15.878759] mpls_gso: MPLS GSO support
[  974.855352] blackhole_netdev_xmit(): Dropping skb.
[  974.855422] blackhole_netdev_xmit(): Dropping skb.
[  974.855461] blackhole_netdev_xmit(): Dropping skb.
[  974.855499] blackhole_netdev_xmit(): Dropping skb.