[    1.909684] ip (241) used greatest stack depth: 12352 bytes left
[    1.936065] ip (244) used greatest stack depth: 12304 bytes left
[  778.524713] blackhole_netdev_xmit(): Dropping skb.
[  778.524773] blackhole_netdev_xmit(): Dropping skb.
[  778.524809] blackhole_netdev_xmit(): Dropping skb.
[  778.524843] blackhole_netdev_xmit(): Dropping skb.
[  937.484830] blackhole_netdev_xmit(): Dropping skb.
[  937.484900] blackhole_netdev_xmit(): Dropping skb.
[  937.484936] blackhole_netdev_xmit(): Dropping skb.
[  937.484969] blackhole_netdev_xmit(): Dropping skb.
[  944.235266] blackhole_netdev_xmit(): Dropping skb.
[  944.235325] blackhole_netdev_xmit(): Dropping skb.
[  944.235358] blackhole_netdev_xmit(): Dropping skb.
[  944.235392] blackhole_netdev_xmit(): Dropping skb.
[ 1011.668005] blackhole_netdev_xmit(): Dropping skb.
[ 1011.668074] blackhole_netdev_xmit(): Dropping skb.
[ 1011.668108] blackhole_netdev_xmit(): Dropping skb.
[ 1011.668141] blackhole_netdev_xmit(): Dropping skb.