[    2.007463] ip (250) used greatest stack depth: 12376 bytes left
[    2.678378] ip (282) used greatest stack depth: 12360 bytes left
[    2.733942] ip (286) used greatest stack depth: 12344 bytes left
[   17.236083] mpls_gso: MPLS GSO support
[  636.097576] ip (22574) used greatest stack depth: 12304 bytes left
[  747.912682] blackhole_netdev_xmit(): Dropping skb.
[  747.912750] blackhole_netdev_xmit(): Dropping skb.
[  747.912787] blackhole_netdev_xmit(): Dropping skb.
[  747.912827] blackhole_netdev_xmit(): Dropping skb.
[  825.998852] blackhole_netdev_xmit(): Dropping skb.
[  825.998919] blackhole_netdev_xmit(): Dropping skb.
[  825.998963] blackhole_netdev_xmit(): Dropping skb.
[  825.999001] blackhole_netdev_xmit(): Dropping skb.