[    2.158338] ip (276) used greatest stack depth: 12320 bytes left
[   10.656817] ip (1144) used greatest stack depth: 12304 bytes left
[   12.875826] ip (1411) used greatest stack depth: 12160 bytes left
[  700.289150] blackhole_netdev_xmit(): Dropping skb.
[  700.289265] blackhole_netdev_xmit(): Dropping skb.
[  700.289309] blackhole_netdev_xmit(): Dropping skb.
[  700.289356] blackhole_netdev_xmit(): Dropping skb.
[  828.361224] blackhole_netdev_xmit(): Dropping skb.
[  828.361276] blackhole_netdev_xmit(): Dropping skb.
[  828.361309] blackhole_netdev_xmit(): Dropping skb.
[  828.361348] blackhole_netdev_xmit(): Dropping skb.
[  856.075102] blackhole_netdev_xmit(): Dropping skb.
[  856.075182] blackhole_netdev_xmit(): Dropping skb.
[  856.075240] blackhole_netdev_xmit(): Dropping skb.
[  856.075299] blackhole_netdev_xmit(): Dropping skb.
[  869.343930] blackhole_netdev_xmit(): Dropping skb.
[  869.344015] blackhole_netdev_xmit(): Dropping skb.
[  869.344061] blackhole_netdev_xmit(): Dropping skb.
[  869.344109] blackhole_netdev_xmit(): Dropping skb.
[  901.536639] blackhole_netdev_xmit(): Dropping skb.
[  901.536688] blackhole_netdev_xmit(): Dropping skb.
[  901.536719] blackhole_netdev_xmit(): Dropping skb.
[  901.536745] blackhole_netdev_xmit(): Dropping skb.
[  912.716753] blackhole_netdev_xmit(): Dropping skb.
[  912.716803] blackhole_netdev_xmit(): Dropping skb.
[  912.716834] blackhole_netdev_xmit(): Dropping skb.
[  912.716860] blackhole_netdev_xmit(): Dropping skb.