[    2.619794] ip (281) used greatest stack depth: 12344 bytes left
[   16.919224] mpls_gso: MPLS GSO support
[   30.020207] ip (2617) used greatest stack depth: 12192 bytes left
[  677.155679] blackhole_netdev_xmit(): Dropping skb.
[  677.155744] blackhole_netdev_xmit(): Dropping skb.
[  677.155776] blackhole_netdev_xmit(): Dropping skb.
[  677.155803] blackhole_netdev_xmit(): Dropping skb.
[  952.400929] blackhole_netdev_xmit(): Dropping skb.
[  952.401006] blackhole_netdev_xmit(): Dropping skb.
[  952.401064] blackhole_netdev_xmit(): Dropping skb.
[  952.401142] blackhole_netdev_xmit(): Dropping skb.