[    2.184946] ip (253) used greatest stack depth: 12288 bytes left
[    2.921703] ip (284) used greatest stack depth: 12272 bytes left
[   18.456734] mpls_gso: MPLS GSO support
[  814.618260] blackhole_netdev_xmit(): Dropping skb.
[  814.618333] blackhole_netdev_xmit(): Dropping skb.
[  814.618374] blackhole_netdev_xmit(): Dropping skb.
[  814.618409] blackhole_netdev_xmit(): Dropping skb.