[    2.531105] ip (275) used greatest stack depth: 12320 bytes left
[   10.894275] ip (945) used greatest stack depth: 12248 bytes left
[  711.431134] blackhole_netdev_xmit(): Dropping skb.
[  711.431197] blackhole_netdev_xmit(): Dropping skb.
[  711.431226] blackhole_netdev_xmit(): Dropping skb.
[  711.431251] blackhole_netdev_xmit(): Dropping skb.
[  946.401415] blackhole_netdev_xmit(): Dropping skb.
[  946.401502] blackhole_netdev_xmit(): Dropping skb.
[  946.401551] blackhole_netdev_xmit(): Dropping skb.
[  946.401605] blackhole_netdev_xmit(): Dropping skb.
[ 1027.038966] blackhole_netdev_xmit(): Dropping skb.
[ 1027.039033] blackhole_netdev_xmit(): Dropping skb.
[ 1027.039066] blackhole_netdev_xmit(): Dropping skb.
[ 1027.039099] blackhole_netdev_xmit(): Dropping skb.