[    2.935624] ip (280) used greatest stack depth: 12344 bytes left
[   19.691945] mpls_gso: MPLS GSO support
[  658.982783] ip (29790) used greatest stack depth: 12288 bytes left
[  806.202649] blackhole_netdev_xmit(): Dropping skb.
[  806.202715] blackhole_netdev_xmit(): Dropping skb.
[  806.202753] blackhole_netdev_xmit(): Dropping skb.
[  806.202794] blackhole_netdev_xmit(): Dropping skb.