[    1.856835] ip (244) used greatest stack depth: 12440 bytes left
[    1.913911] ip (250) used greatest stack depth: 12376 bytes left
[    2.372243] ip (278) used greatest stack depth: 12360 bytes left
[    2.411804] ip (282) used greatest stack depth: 12344 bytes left
[   15.055745] mpls_gso: MPLS GSO support
[  716.581866] blackhole_netdev_xmit(): Dropping skb.
[  716.581921] blackhole_netdev_xmit(): Dropping skb.
[  716.581953] blackhole_netdev_xmit(): Dropping skb.
[  716.581984] blackhole_netdev_xmit(): Dropping skb.