[    2.629210] ip (280) used greatest stack depth: 12344 bytes left
[  837.115712] blackhole_netdev_xmit(): Dropping skb.
[  837.115840] blackhole_netdev_xmit(): Dropping skb.
[  837.115897] blackhole_netdev_xmit(): Dropping skb.
[  837.115942] blackhole_netdev_xmit(): Dropping skb.
[  870.304081] blackhole_netdev_xmit(): Dropping skb.
[  870.304154] blackhole_netdev_xmit(): Dropping skb.
[  870.304208] blackhole_netdev_xmit(): Dropping skb.
[  870.304274] blackhole_netdev_xmit(): Dropping skb.
[  871.313141] blackhole_netdev_xmit(): Dropping skb.
[  871.313208] blackhole_netdev_xmit(): Dropping skb.
[  871.313251] blackhole_netdev_xmit(): Dropping skb.
[  871.313301] blackhole_netdev_xmit(): Dropping skb.
[  917.230603] blackhole_netdev_xmit(): Dropping skb.
[  917.230676] blackhole_netdev_xmit(): Dropping skb.
[  917.230733] blackhole_netdev_xmit(): Dropping skb.
[  917.230797] blackhole_netdev_xmit(): Dropping skb.
[  924.035615] blackhole_netdev_xmit(): Dropping skb.
[  924.035682] blackhole_netdev_xmit(): Dropping skb.
[  924.035740] blackhole_netdev_xmit(): Dropping skb.
[  924.035797] blackhole_netdev_xmit(): Dropping skb.
[  943.231205] blackhole_netdev_xmit(): Dropping skb.
[  943.231266] blackhole_netdev_xmit(): Dropping skb.
[  943.231301] blackhole_netdev_xmit(): Dropping skb.
[  943.231340] blackhole_netdev_xmit(): Dropping skb.
[  944.618780] blackhole_netdev_xmit(): Dropping skb.
[  944.618838] blackhole_netdev_xmit(): Dropping skb.
[  944.618869] blackhole_netdev_xmit(): Dropping skb.
[  944.618911] blackhole_netdev_xmit(): Dropping skb.