[    2.621707] ip (278) used greatest stack depth: 12368 bytes left
[    2.834126] ip (292) used greatest stack depth: 12352 bytes left
[   22.792388] ip (2137) used greatest stack depth: 12072 bytes left
[  765.361210] blackhole_netdev_xmit(): Dropping skb.
[  765.361285] blackhole_netdev_xmit(): Dropping skb.
[  765.361325] blackhole_netdev_xmit(): Dropping skb.
[  765.361363] blackhole_netdev_xmit(): Dropping skb.
[  775.048831] blackhole_netdev_xmit(): Dropping skb.
[  775.048920] blackhole_netdev_xmit(): Dropping skb.
[  775.048966] blackhole_netdev_xmit(): Dropping skb.
[  775.049028] blackhole_netdev_xmit(): Dropping skb.
[  781.590352] blackhole_netdev_xmit(): Dropping skb.
[  781.590405] blackhole_netdev_xmit(): Dropping skb.
[  781.590436] blackhole_netdev_xmit(): Dropping skb.
[  781.590469] blackhole_netdev_xmit(): Dropping skb.
[  786.055253] blackhole_netdev_xmit(): Dropping skb.
[  786.055307] blackhole_netdev_xmit(): Dropping skb.
[  786.055339] blackhole_netdev_xmit(): Dropping skb.
[  786.055378] blackhole_netdev_xmit(): Dropping skb.
[  863.160098] blackhole_netdev_xmit(): Dropping skb.
[  863.160153] blackhole_netdev_xmit(): Dropping skb.
[  863.160186] blackhole_netdev_xmit(): Dropping skb.
[  863.160220] blackhole_netdev_xmit(): Dropping skb.
[  912.903687] blackhole_netdev_xmit(): Dropping skb.
[  912.903761] blackhole_netdev_xmit(): Dropping skb.
[  912.903812] blackhole_netdev_xmit(): Dropping skb.
[  912.903861] blackhole_netdev_xmit(): Dropping skb.
[  926.300524] blackhole_netdev_xmit(): Dropping skb.
[  926.300589] blackhole_netdev_xmit(): Dropping skb.
[  926.300648] blackhole_netdev_xmit(): Dropping skb.
[  926.300699] blackhole_netdev_xmit(): Dropping skb.