[    1.911127] ip (243) used greatest stack depth: 12376 bytes left
[    2.529364] ip (278) used greatest stack depth: 12360 bytes left
[    2.724225] ip (292) used greatest stack depth: 12352 bytes left
[    8.213129] ip (650) used greatest stack depth: 12344 bytes left
[   13.096788] ip (1078) used greatest stack depth: 12312 bytes left
[   16.725700] ip (1397) used greatest stack depth: 12296 bytes left
[  661.854161] blackhole_netdev_xmit(): Dropping skb.
[  661.854221] blackhole_netdev_xmit(): Dropping skb.
[  661.854253] blackhole_netdev_xmit(): Dropping skb.
[  661.854285] blackhole_netdev_xmit(): Dropping skb.
[  663.327505] blackhole_netdev_xmit(): Dropping skb.
[  663.327580] blackhole_netdev_xmit(): Dropping skb.
[  663.327627] blackhole_netdev_xmit(): Dropping skb.
[  663.327671] blackhole_netdev_xmit(): Dropping skb.
[  666.215332] blackhole_netdev_xmit(): Dropping skb.
[  666.215387] blackhole_netdev_xmit(): Dropping skb.
[  819.290376] net_ratelimit: 2 callbacks suppressed
[  819.290384] blackhole_netdev_xmit(): Dropping skb.
[  819.290463] blackhole_netdev_xmit(): Dropping skb.
[  819.290494] blackhole_netdev_xmit(): Dropping skb.
[  819.290525] blackhole_netdev_xmit(): Dropping skb.
[  853.448038] blackhole_netdev_xmit(): Dropping skb.
[  853.448111] blackhole_netdev_xmit(): Dropping skb.
[  853.448163] blackhole_netdev_xmit(): Dropping skb.
[  853.448213] blackhole_netdev_xmit(): Dropping skb.
[  916.747882] blackhole_netdev_xmit(): Dropping skb.
[  916.747941] blackhole_netdev_xmit(): Dropping skb.
[  916.747975] blackhole_netdev_xmit(): Dropping skb.
[  916.748017] blackhole_netdev_xmit(): Dropping skb.
[  953.827136] blackhole_netdev_xmit(): Dropping skb.
[  953.827209] blackhole_netdev_xmit(): Dropping skb.
[  953.827247] blackhole_netdev_xmit(): Dropping skb.
[  953.827283] blackhole_netdev_xmit(): Dropping skb.
[ 1109.511395] blackhole_netdev_xmit(): Dropping skb.
[ 1109.511457] blackhole_netdev_xmit(): Dropping skb.
[ 1109.511489] blackhole_netdev_xmit(): Dropping skb.
[ 1109.511525] blackhole_netdev_xmit(): Dropping skb.