[    2.484890] ip (272) used greatest stack depth: 12344 bytes left
[  807.734278] blackhole_netdev_xmit(): Dropping skb.
[  807.734346] blackhole_netdev_xmit(): Dropping skb.
[  807.734383] blackhole_netdev_xmit(): Dropping skb.
[  807.734419] blackhole_netdev_xmit(): Dropping skb.
[ 1105.919497] blackhole_netdev_xmit(): Dropping skb.
[ 1105.919559] blackhole_netdev_xmit(): Dropping skb.
[ 1105.919593] blackhole_netdev_xmit(): Dropping skb.
[ 1105.919629] blackhole_netdev_xmit(): Dropping skb.
[ 1142.363931] blackhole_netdev_xmit(): Dropping skb.
[ 1142.363978] blackhole_netdev_xmit(): Dropping skb.
[ 1142.364012] blackhole_netdev_xmit(): Dropping skb.
[ 1142.364052] blackhole_netdev_xmit(): Dropping skb.