[    1.759819] ip (241) used greatest stack depth: 12352 bytes left
[    2.249021] ip (275) used greatest stack depth: 12320 bytes left
[  993.693636] blackhole_netdev_xmit(): Dropping skb.
[  993.693725] blackhole_netdev_xmit(): Dropping skb.
[  993.693781] blackhole_netdev_xmit(): Dropping skb.
[  993.693839] blackhole_netdev_xmit(): Dropping skb.
[ 1173.731291] blackhole_netdev_xmit(): Dropping skb.
[ 1173.731344] blackhole_netdev_xmit(): Dropping skb.
[ 1173.731373] blackhole_netdev_xmit(): Dropping skb.
[ 1173.731404] blackhole_netdev_xmit(): Dropping skb.
[ 1233.569535] blackhole_netdev_xmit(): Dropping skb.
[ 1233.569596] blackhole_netdev_xmit(): Dropping skb.
[ 1233.569632] blackhole_netdev_xmit(): Dropping skb.
[ 1233.569669] blackhole_netdev_xmit(): Dropping skb.