[    1.911499] ip (245) used greatest stack depth: 12336 bytes left
[  713.482700] blackhole_netdev_xmit(): Dropping skb.
[  713.482787] blackhole_netdev_xmit(): Dropping skb.
[  713.482824] blackhole_netdev_xmit(): Dropping skb.
[  713.482862] blackhole_netdev_xmit(): Dropping skb.
[  982.575681] blackhole_netdev_xmit(): Dropping skb.
[  982.575754] blackhole_netdev_xmit(): Dropping skb.
[  982.575791] blackhole_netdev_xmit(): Dropping skb.
[  982.575825] blackhole_netdev_xmit(): Dropping skb.
[ 1002.756372] blackhole_netdev_xmit(): Dropping skb.
[ 1002.756447] blackhole_netdev_xmit(): Dropping skb.
[ 1002.756490] blackhole_netdev_xmit(): Dropping skb.
[ 1002.756541] blackhole_netdev_xmit(): Dropping skb.
[ 1026.081118] blackhole_netdev_xmit(): Dropping skb.
[ 1026.081169] blackhole_netdev_xmit(): Dropping skb.
[ 1026.081199] blackhole_netdev_xmit(): Dropping skb.
[ 1026.081226] blackhole_netdev_xmit(): Dropping skb.
[ 1042.487476] blackhole_netdev_xmit(): Dropping skb.
[ 1042.487525] blackhole_netdev_xmit(): Dropping skb.
[ 1042.487556] blackhole_netdev_xmit(): Dropping skb.
[ 1042.487593] blackhole_netdev_xmit(): Dropping skb.