[    1.922982] ip (294) used greatest stack depth: 12288 bytes left
[   11.780895] mpls_gso: MPLS GSO support
[  898.842476] blackhole_netdev_xmit(): Dropping skb.
[  898.842580] blackhole_netdev_xmit(): Dropping skb.
[  898.842638] blackhole_netdev_xmit(): Dropping skb.
[  898.842698] blackhole_netdev_xmit(): Dropping skb.
[  979.591184] blackhole_netdev_xmit(): Dropping skb.
[  979.591285] blackhole_netdev_xmit(): Dropping skb.
[  979.591349] blackhole_netdev_xmit(): Dropping skb.
[  979.591400] blackhole_netdev_xmit(): Dropping skb.