[    2.480748] ip (275) used greatest stack depth: 12344 bytes left
[    2.650765] ip (290) used greatest stack depth: 12296 bytes left
[ 1015.023540] blackhole_netdev_xmit(): Dropping skb.
[ 1015.023618] blackhole_netdev_xmit(): Dropping skb.
[ 1015.023659] blackhole_netdev_xmit(): Dropping skb.
[ 1015.023700] blackhole_netdev_xmit(): Dropping skb.
[ 1054.228472] blackhole_netdev_xmit(): Dropping skb.
[ 1054.228551] blackhole_netdev_xmit(): Dropping skb.
[ 1054.228595] blackhole_netdev_xmit(): Dropping skb.
[ 1054.228632] blackhole_netdev_xmit(): Dropping skb.