[    1.771138] ip (247) used greatest stack depth: 12320 bytes left
[  796.131758] blackhole_netdev_xmit(): Dropping skb.
[  796.131844] blackhole_netdev_xmit(): Dropping skb.
[  796.131893] blackhole_netdev_xmit(): Dropping skb.
[  796.131937] blackhole_netdev_xmit(): Dropping skb.
[  954.594226] blackhole_netdev_xmit(): Dropping skb.
[  954.594294] blackhole_netdev_xmit(): Dropping skb.
[  954.594329] blackhole_netdev_xmit(): Dropping skb.
[  954.594362] blackhole_netdev_xmit(): Dropping skb.
[  982.339005] blackhole_netdev_xmit(): Dropping skb.
[  982.339063] blackhole_netdev_xmit(): Dropping skb.
[  982.339100] blackhole_netdev_xmit(): Dropping skb.
[  982.339151] blackhole_netdev_xmit(): Dropping skb.
[ 1027.290509] blackhole_netdev_xmit(): Dropping skb.
[ 1027.290564] blackhole_netdev_xmit(): Dropping skb.
[ 1027.290597] blackhole_netdev_xmit(): Dropping skb.
[ 1027.290633] blackhole_netdev_xmit(): Dropping skb.
[ 1190.359271] blackhole_netdev_xmit(): Dropping skb.
[ 1190.359322] blackhole_netdev_xmit(): Dropping skb.
[ 1190.359351] blackhole_netdev_xmit(): Dropping skb.
[ 1190.359383] blackhole_netdev_xmit(): Dropping skb.
[ 1224.968925] blackhole_netdev_xmit(): Dropping skb.
[ 1224.968976] blackhole_netdev_xmit(): Dropping skb.
[ 1224.969008] blackhole_netdev_xmit(): Dropping skb.
[ 1224.969045] blackhole_netdev_xmit(): Dropping skb.