[    1.769608] ip (242) used greatest stack depth: 12376 bytes left
[    2.379535] ip (276) used greatest stack depth: 12344 bytes left
[  745.606938] blackhole_netdev_xmit(): Dropping skb.
[  745.606999] blackhole_netdev_xmit(): Dropping skb.
[  745.607031] blackhole_netdev_xmit(): Dropping skb.
[  745.607063] blackhole_netdev_xmit(): Dropping skb.
[  787.010675] blackhole_netdev_xmit(): Dropping skb.
[  787.010742] blackhole_netdev_xmit(): Dropping skb.
[  787.010782] blackhole_netdev_xmit(): Dropping skb.
[  787.010823] blackhole_netdev_xmit(): Dropping skb.
[  904.686586] blackhole_netdev_xmit(): Dropping skb.
[  904.686659] blackhole_netdev_xmit(): Dropping skb.
[  904.686707] blackhole_netdev_xmit(): Dropping skb.
[  904.686758] blackhole_netdev_xmit(): Dropping skb.
[ 1093.975315] blackhole_netdev_xmit(): Dropping skb.
[ 1093.975378] blackhole_netdev_xmit(): Dropping skb.
[ 1093.975412] blackhole_netdev_xmit(): Dropping skb.
[ 1093.975439] blackhole_netdev_xmit(): Dropping skb.
[ 1210.781206] blackhole_netdev_xmit(): Dropping skb.
[ 1210.781269] blackhole_netdev_xmit(): Dropping skb.
[ 1210.781302] blackhole_netdev_xmit(): Dropping skb.
[ 1210.781335] blackhole_netdev_xmit(): Dropping skb.
[ 1214.794222] blackhole_netdev_xmit(): Dropping skb.
[ 1214.794284] blackhole_netdev_xmit(): Dropping skb.
[ 1214.794320] blackhole_netdev_xmit(): Dropping skb.
[ 1214.794364] blackhole_netdev_xmit(): Dropping skb.