[    1.823804] ip (246) used greatest stack depth: 12440 bytes left
[    1.891572] ip (252) used greatest stack depth: 12328 bytes left
[   15.351752] mpls_gso: MPLS GSO support
[  780.552638] blackhole_netdev_xmit(): Dropping skb.
[  780.552706] blackhole_netdev_xmit(): Dropping skb.
[  780.552737] blackhole_netdev_xmit(): Dropping skb.
[  780.552767] blackhole_netdev_xmit(): Dropping skb.