[    1.928925] ip (244) used greatest stack depth: 12384 bytes left
[    2.500519] ip (278) used greatest stack depth: 12368 bytes left
[    2.544567] ip (283) used greatest stack depth: 12352 bytes left
[   20.426095] ip (2137) used greatest stack depth: 12312 bytes left
[  711.122102] blackhole_netdev_xmit(): Dropping skb.
[  711.122185] blackhole_netdev_xmit(): Dropping skb.
[  711.122242] blackhole_netdev_xmit(): Dropping skb.
[  711.122314] blackhole_netdev_xmit(): Dropping skb.
[  799.162976] blackhole_netdev_xmit(): Dropping skb.
[  799.163035] blackhole_netdev_xmit(): Dropping skb.
[  799.163074] blackhole_netdev_xmit(): Dropping skb.
[  799.163107] blackhole_netdev_xmit(): Dropping skb.
[  804.568245] blackhole_netdev_xmit(): Dropping skb.
[  804.568295] blackhole_netdev_xmit(): Dropping skb.
[  804.568326] blackhole_netdev_xmit(): Dropping skb.
[  804.568358] blackhole_netdev_xmit(): Dropping skb.
[  833.655509] blackhole_netdev_xmit(): Dropping skb.
[  833.655575] blackhole_netdev_xmit(): Dropping skb.
[  833.655610] blackhole_netdev_xmit(): Dropping skb.
[  833.655651] blackhole_netdev_xmit(): Dropping skb.
[  887.963746] blackhole_netdev_xmit(): Dropping skb.
[  887.963797] blackhole_netdev_xmit(): Dropping skb.
[  887.963828] blackhole_netdev_xmit(): Dropping skb.
[  887.963857] blackhole_netdev_xmit(): Dropping skb.
[  942.009659] blackhole_netdev_xmit(): Dropping skb.
[  942.009714] blackhole_netdev_xmit(): Dropping skb.
[  942.009746] blackhole_netdev_xmit(): Dropping skb.
[  942.009780] blackhole_netdev_xmit(): Dropping skb.