[    2.423259] ip (276) used greatest stack depth: 12344 bytes left
[  649.699411] blackhole_netdev_xmit(): Dropping skb.
[  649.699514] blackhole_netdev_xmit(): Dropping skb.
[  649.699568] blackhole_netdev_xmit(): Dropping skb.
[  649.699619] blackhole_netdev_xmit(): Dropping skb.
[ 1035.784879] blackhole_netdev_xmit(): Dropping skb.
[ 1035.784934] blackhole_netdev_xmit(): Dropping skb.
[ 1035.784968] blackhole_netdev_xmit(): Dropping skb.
[ 1035.785005] blackhole_netdev_xmit(): Dropping skb.