[    2.057729] ip (277) used greatest stack depth: 12320 bytes left
[  650.149830] blackhole_netdev_xmit(): Dropping skb.
[  650.149889] blackhole_netdev_xmit(): Dropping skb.
[  650.149920] blackhole_netdev_xmit(): Dropping skb.
[  650.149951] blackhole_netdev_xmit(): Dropping skb.
[  653.635109] blackhole_netdev_xmit(): Dropping skb.
[  653.635178] blackhole_netdev_xmit(): Dropping skb.
[  653.635224] blackhole_netdev_xmit(): Dropping skb.
[  653.635280] blackhole_netdev_xmit(): Dropping skb.
[  713.744293] blackhole_netdev_xmit(): Dropping skb.
[  713.744345] blackhole_netdev_xmit(): Dropping skb.
[  713.744378] blackhole_netdev_xmit(): Dropping skb.
[  713.744413] blackhole_netdev_xmit(): Dropping skb.
[  735.133351] blackhole_netdev_xmit(): Dropping skb.
[  735.133406] blackhole_netdev_xmit(): Dropping skb.
[  735.133439] blackhole_netdev_xmit(): Dropping skb.
[  735.133471] blackhole_netdev_xmit(): Dropping skb.
[  769.607335] blackhole_netdev_xmit(): Dropping skb.
[  769.607414] blackhole_netdev_xmit(): Dropping skb.
[  769.607469] blackhole_netdev_xmit(): Dropping skb.
[  769.607532] blackhole_netdev_xmit(): Dropping skb.
[  778.415614] blackhole_netdev_xmit(): Dropping skb.
[  778.415670] blackhole_netdev_xmit(): Dropping skb.
[  778.415708] blackhole_netdev_xmit(): Dropping skb.
[  778.415741] blackhole_netdev_xmit(): Dropping skb.
[  808.458907] blackhole_netdev_xmit(): Dropping skb.
[  808.458964] blackhole_netdev_xmit(): Dropping skb.
[  808.458995] blackhole_netdev_xmit(): Dropping skb.
[  808.459028] blackhole_netdev_xmit(): Dropping skb.
[  927.821907] blackhole_netdev_xmit(): Dropping skb.
[  927.821980] blackhole_netdev_xmit(): Dropping skb.
[  927.822023] blackhole_netdev_xmit(): Dropping skb.
[  927.822071] blackhole_netdev_xmit(): Dropping skb.