[    2.378844] ip (274) used greatest stack depth: 12344 bytes left
[   22.726847] ip (2367) used greatest stack depth: 12184 bytes left
[  654.553767] blackhole_netdev_xmit(): Dropping skb.
[  654.553837] blackhole_netdev_xmit(): Dropping skb.
[  654.553882] blackhole_netdev_xmit(): Dropping skb.
[  654.553940] blackhole_netdev_xmit(): Dropping skb.
[  887.493649] blackhole_netdev_xmit(): Dropping skb.
[  887.493714] blackhole_netdev_xmit(): Dropping skb.
[  887.493756] blackhole_netdev_xmit(): Dropping skb.
[  887.493787] blackhole_netdev_xmit(): Dropping skb.
[  919.434332] blackhole_netdev_xmit(): Dropping skb.
[  919.434407] blackhole_netdev_xmit(): Dropping skb.
[  919.434463] blackhole_netdev_xmit(): Dropping skb.
[  919.434523] blackhole_netdev_xmit(): Dropping skb.
[ 1042.234671] blackhole_netdev_xmit(): Dropping skb.
[ 1042.234727] blackhole_netdev_xmit(): Dropping skb.
[ 1042.234763] blackhole_netdev_xmit(): Dropping skb.
[ 1042.234801] blackhole_netdev_xmit(): Dropping skb.