[  545.305206] ip (8855) used greatest stack depth: 12232 bytes left
[ 1055.304481] blackhole_netdev_xmit(): Dropping skb.
[ 1055.304564] blackhole_netdev_xmit(): Dropping skb.
[ 1055.304613] blackhole_netdev_xmit(): Dropping skb.
[ 1055.304651] blackhole_netdev_xmit(): Dropping skb.
[ 1332.179296] blackhole_netdev_xmit(): Dropping skb.
[ 1332.179354] blackhole_netdev_xmit(): Dropping skb.
[ 1332.179388] blackhole_netdev_xmit(): Dropping skb.
[ 1332.179428] blackhole_netdev_xmit(): Dropping skb.
[ 1390.382280] blackhole_netdev_xmit(): Dropping skb.
[ 1390.382338] blackhole_netdev_xmit(): Dropping skb.
[ 1390.382371] blackhole_netdev_xmit(): Dropping skb.
[ 1390.382407] blackhole_netdev_xmit(): Dropping skb.
[ 1449.669034] blackhole_netdev_xmit(): Dropping skb.
[ 1449.669088] blackhole_netdev_xmit(): Dropping skb.
[ 1449.669118] blackhole_netdev_xmit(): Dropping skb.
[ 1449.669145] blackhole_netdev_xmit(): Dropping skb.