[    2.011458] ip (244) used greatest stack depth: 12384 bytes left
[    2.049196] ip (247) used greatest stack depth: 12336 bytes left
[  773.085225] blackhole_netdev_xmit(): Dropping skb.
[  773.085402] blackhole_netdev_xmit(): Dropping skb.
[  773.085453] blackhole_netdev_xmit(): Dropping skb.
[  773.085498] blackhole_netdev_xmit(): Dropping skb.
[  793.280067] blackhole_netdev_xmit(): Dropping skb.
[  793.280130] blackhole_netdev_xmit(): Dropping skb.
[  793.280165] blackhole_netdev_xmit(): Dropping skb.
[  793.280205] blackhole_netdev_xmit(): Dropping skb.
[ 1075.859342] blackhole_netdev_xmit(): Dropping skb.
[ 1075.859420] blackhole_netdev_xmit(): Dropping skb.
[ 1075.859455] blackhole_netdev_xmit(): Dropping skb.
[ 1075.859490] blackhole_netdev_xmit(): Dropping skb.
[ 1143.455824] blackhole_netdev_xmit(): Dropping skb.
[ 1143.455886] blackhole_netdev_xmit(): Dropping skb.
[ 1143.455922] blackhole_netdev_xmit(): Dropping skb.
[ 1143.455954] blackhole_netdev_xmit(): Dropping skb.
[ 1153.101539] blackhole_netdev_xmit(): Dropping skb.
[ 1153.101598] blackhole_netdev_xmit(): Dropping skb.
[ 1153.101635] blackhole_netdev_xmit(): Dropping skb.
[ 1153.101670] blackhole_netdev_xmit(): Dropping skb.