[    1.912426] ip (295) used greatest stack depth: 12248 bytes left
[   10.349204] mpls_gso: MPLS GSO support
[   17.495680] ip (2579) used greatest stack depth: 12184 bytes left
[  903.857606] blackhole_netdev_xmit(): Dropping skb.
[  903.857660] blackhole_netdev_xmit(): Dropping skb.
[  903.857696] blackhole_netdev_xmit(): Dropping skb.
[  903.857729] blackhole_netdev_xmit(): Dropping skb.