[    2.021326] ip (246) used greatest stack depth: 12336 bytes left
[   11.908364] ip (952) used greatest stack depth: 12072 bytes left
[  667.885516] blackhole_netdev_xmit(): Dropping skb.
[  667.885631] blackhole_netdev_xmit(): Dropping skb.
[  667.885681] blackhole_netdev_xmit(): Dropping skb.
[  667.885726] blackhole_netdev_xmit(): Dropping skb.
[  896.697127] blackhole_netdev_xmit(): Dropping skb.
[  896.697203] blackhole_netdev_xmit(): Dropping skb.
[  896.697248] blackhole_netdev_xmit(): Dropping skb.
[  896.697283] blackhole_netdev_xmit(): Dropping skb.
[  973.819743] blackhole_netdev_xmit(): Dropping skb.
[  973.819792] blackhole_netdev_xmit(): Dropping skb.
[  973.819822] blackhole_netdev_xmit(): Dropping skb.
[  973.819856] blackhole_netdev_xmit(): Dropping skb.
[ 1013.816138] blackhole_netdev_xmit(): Dropping skb.
[ 1013.816203] blackhole_netdev_xmit(): Dropping skb.
[ 1013.816239] blackhole_netdev_xmit(): Dropping skb.
[ 1013.816280] blackhole_netdev_xmit(): Dropping skb.
[ 1114.314820] blackhole_netdev_xmit(): Dropping skb.
[ 1114.314898] blackhole_netdev_xmit(): Dropping skb.
[ 1114.314947] blackhole_netdev_xmit(): Dropping skb.
[ 1114.314994] blackhole_netdev_xmit(): Dropping skb.
[ 1140.359865] blackhole_netdev_xmit(): Dropping skb.
[ 1140.359915] blackhole_netdev_xmit(): Dropping skb.
[ 1140.359945] blackhole_netdev_xmit(): Dropping skb.
[ 1140.359970] blackhole_netdev_xmit(): Dropping skb.