[    1.706080] ip (241) used greatest stack depth: 12592 bytes left
[    2.147577] ip (275) used greatest stack depth: 12272 bytes left
[    7.961011] ip (796) used greatest stack depth: 12160 bytes left
[  785.444597] blackhole_netdev_xmit(): Dropping skb.
[  785.444669] blackhole_netdev_xmit(): Dropping skb.
[  785.444705] blackhole_netdev_xmit(): Dropping skb.
[  785.444734] blackhole_netdev_xmit(): Dropping skb.
[  790.122267] blackhole_netdev_xmit(): Dropping skb.
[  790.122325] blackhole_netdev_xmit(): Dropping skb.
[  790.122364] blackhole_netdev_xmit(): Dropping skb.
[  790.122407] blackhole_netdev_xmit(): Dropping skb.
[  792.898235] blackhole_netdev_xmit(): Dropping skb.
[  792.898295] blackhole_netdev_xmit(): Dropping skb.
[  792.898331] blackhole_netdev_xmit(): Dropping skb.
[  792.898371] blackhole_netdev_xmit(): Dropping skb.
[  793.845349] blackhole_netdev_xmit(): Dropping skb.
[  793.845409] blackhole_netdev_xmit(): Dropping skb.
[  793.845455] blackhole_netdev_xmit(): Dropping skb.
[  793.845492] blackhole_netdev_xmit(): Dropping skb.
[  816.035112] blackhole_netdev_xmit(): Dropping skb.
[  816.035184] blackhole_netdev_xmit(): Dropping skb.
[  816.035246] blackhole_netdev_xmit(): Dropping skb.
[  816.035288] blackhole_netdev_xmit(): Dropping skb.
[  962.471243] blackhole_netdev_xmit(): Dropping skb.
[  962.471309] blackhole_netdev_xmit(): Dropping skb.
[  962.471339] blackhole_netdev_xmit(): Dropping skb.
[  962.471373] blackhole_netdev_xmit(): Dropping skb.