[    2.559487] ip (280) used greatest stack depth: 12344 bytes left
[  731.819624] blackhole_netdev_xmit(): Dropping skb.
[  731.819699] blackhole_netdev_xmit(): Dropping skb.
[  731.819731] blackhole_netdev_xmit(): Dropping skb.
[  731.819783] blackhole_netdev_xmit(): Dropping skb.
[  757.884869] blackhole_netdev_xmit(): Dropping skb.
[  757.884953] blackhole_netdev_xmit(): Dropping skb.
[  757.885000] blackhole_netdev_xmit(): Dropping skb.
[  757.885041] blackhole_netdev_xmit(): Dropping skb.
[  762.561972] blackhole_netdev_xmit(): Dropping skb.
[  762.562030] blackhole_netdev_xmit(): Dropping skb.
[  762.562063] blackhole_netdev_xmit(): Dropping skb.
[  762.562098] blackhole_netdev_xmit(): Dropping skb.
[  765.415387] blackhole_netdev_xmit(): Dropping skb.
[  765.415439] blackhole_netdev_xmit(): Dropping skb.
[  765.415469] blackhole_netdev_xmit(): Dropping skb.
[  765.415494] blackhole_netdev_xmit(): Dropping skb.
[  867.496599] blackhole_netdev_xmit(): Dropping skb.
[  867.496659] blackhole_netdev_xmit(): Dropping skb.
[  867.496690] blackhole_netdev_xmit(): Dropping skb.
[  867.496716] blackhole_netdev_xmit(): Dropping skb.
[ 1070.804551] blackhole_netdev_xmit(): Dropping skb.
[ 1070.804627] blackhole_netdev_xmit(): Dropping skb.
[ 1070.804665] blackhole_netdev_xmit(): Dropping skb.
[ 1070.804697] blackhole_netdev_xmit(): Dropping skb.