[    2.657323] ip (282) used greatest stack depth: 12344 bytes left
[   17.395884] mpls_gso: MPLS GSO support
[  642.471976] ip (26241) used greatest stack depth: 12192 bytes left
[  834.005735] blackhole_netdev_xmit(): Dropping skb.
[  834.005802] blackhole_netdev_xmit(): Dropping skb.
[  834.005840] blackhole_netdev_xmit(): Dropping skb.
[  834.005874] blackhole_netdev_xmit(): Dropping skb.