[    1.675748] ip (241) used greatest stack depth: 12832 bytes left
[    2.155658] ip (275) used greatest stack depth: 12320 bytes left
[  694.222249] blackhole_netdev_xmit(): Dropping skb.
[  694.222320] blackhole_netdev_xmit(): Dropping skb.
[  694.222360] blackhole_netdev_xmit(): Dropping skb.
[  694.222401] blackhole_netdev_xmit(): Dropping skb.
[  716.581431] blackhole_netdev_xmit(): Dropping skb.
[  716.581490] blackhole_netdev_xmit(): Dropping skb.
[  716.581525] blackhole_netdev_xmit(): Dropping skb.
[  716.581552] blackhole_netdev_xmit(): Dropping skb.
[  896.413177] blackhole_netdev_xmit(): Dropping skb.
[  896.413238] blackhole_netdev_xmit(): Dropping skb.
[  896.413268] blackhole_netdev_xmit(): Dropping skb.
[  896.413294] blackhole_netdev_xmit(): Dropping skb.
[ 1175.093102] blackhole_netdev_xmit(): Dropping skb.
[ 1175.093170] blackhole_netdev_xmit(): Dropping skb.
[ 1175.093205] blackhole_netdev_xmit(): Dropping skb.
[ 1175.093239] blackhole_netdev_xmit(): Dropping skb.