[    2.076202] ip (240) used greatest stack depth: 12352 bytes left
[    2.723038] ip (274) used greatest stack depth: 12320 bytes left
[    5.479640] ip (409) used greatest stack depth: 12304 bytes left
[    8.582026] ip (659) used greatest stack depth: 12272 bytes left
[  798.930834] blackhole_netdev_xmit(): Dropping skb.
[  798.930905] blackhole_netdev_xmit(): Dropping skb.
[  798.930942] blackhole_netdev_xmit(): Dropping skb.
[  798.930976] blackhole_netdev_xmit(): Dropping skb.
[  972.016801] blackhole_netdev_xmit(): Dropping skb.
[  972.016866] blackhole_netdev_xmit(): Dropping skb.
[  972.016902] blackhole_netdev_xmit(): Dropping skb.
[  972.016943] blackhole_netdev_xmit(): Dropping skb.
[ 1009.077367] blackhole_netdev_xmit(): Dropping skb.
[ 1009.077429] blackhole_netdev_xmit(): Dropping skb.
[ 1009.077464] blackhole_netdev_xmit(): Dropping skb.
[ 1009.077504] blackhole_netdev_xmit(): Dropping skb.
[ 1014.129790] blackhole_netdev_xmit(): Dropping skb.
[ 1014.129854] blackhole_netdev_xmit(): Dropping skb.
[ 1014.129898] blackhole_netdev_xmit(): Dropping skb.
[ 1014.129934] blackhole_netdev_xmit(): Dropping skb.
[ 1057.512442] blackhole_netdev_xmit(): Dropping skb.
[ 1057.512494] blackhole_netdev_xmit(): Dropping skb.
[ 1057.512524] blackhole_netdev_xmit(): Dropping skb.
[ 1057.512550] blackhole_netdev_xmit(): Dropping skb.
[ 1120.894800] blackhole_netdev_xmit(): Dropping skb.
[ 1120.894856] blackhole_netdev_xmit(): Dropping skb.
[ 1120.894888] blackhole_netdev_xmit(): Dropping skb.
[ 1120.894924] blackhole_netdev_xmit(): Dropping skb.
[ 1135.833040] blackhole_netdev_xmit(): Dropping skb.
[ 1135.833097] blackhole_netdev_xmit(): Dropping skb.
[ 1135.833142] blackhole_netdev_xmit(): Dropping skb.
[ 1135.833178] blackhole_netdev_xmit(): Dropping skb.