[    1.944592] ip (246) used greatest stack depth: 12384 bytes left
[    2.652291] ip (278) used greatest stack depth: 12368 bytes left
[    2.708501] ip (282) used greatest stack depth: 12352 bytes left
[  721.482180] blackhole_netdev_xmit(): Dropping skb.
[  721.482244] blackhole_netdev_xmit(): Dropping skb.
[  721.482276] blackhole_netdev_xmit(): Dropping skb.
[  721.482308] blackhole_netdev_xmit(): Dropping skb.
[  823.867933] blackhole_netdev_xmit(): Dropping skb.
[  823.867991] blackhole_netdev_xmit(): Dropping skb.
[  823.868023] blackhole_netdev_xmit(): Dropping skb.
[  823.868051] blackhole_netdev_xmit(): Dropping skb.
[  939.325132] blackhole_netdev_xmit(): Dropping skb.
[  939.325183] blackhole_netdev_xmit(): Dropping skb.
[  939.325213] blackhole_netdev_xmit(): Dropping skb.
[  939.325240] blackhole_netdev_xmit(): Dropping skb.
[  946.304986] blackhole_netdev_xmit(): Dropping skb.
[  946.305037] blackhole_netdev_xmit(): Dropping skb.
[  946.305067] blackhole_netdev_xmit(): Dropping skb.
[  946.305094] blackhole_netdev_xmit(): Dropping skb.
[  950.751831] blackhole_netdev_xmit(): Dropping skb.
[  950.751883] blackhole_netdev_xmit(): Dropping skb.
[  950.751914] blackhole_netdev_xmit(): Dropping skb.
[  950.751941] blackhole_netdev_xmit(): Dropping skb.
[ 1033.540378] blackhole_netdev_xmit(): Dropping skb.
[ 1033.540446] blackhole_netdev_xmit(): Dropping skb.
[ 1033.540488] blackhole_netdev_xmit(): Dropping skb.
[ 1033.540528] blackhole_netdev_xmit(): Dropping skb.