[    2.067010] ip (246) used greatest stack depth: 12376 bytes left
[    2.760907] ip (281) used greatest stack depth: 12344 bytes left
[   16.497217] mpls_gso: MPLS GSO support
[  645.561257] ip (21136) used greatest stack depth: 12328 bytes left
[  650.370923] ip (21421) used greatest stack depth: 12288 bytes left
[  965.370822] blackhole_netdev_xmit(): Dropping skb.
[  965.370920] blackhole_netdev_xmit(): Dropping skb.
[  965.370967] blackhole_netdev_xmit(): Dropping skb.
[  965.371013] blackhole_netdev_xmit(): Dropping skb.