[    1.988599] ip (244) used greatest stack depth: 12384 bytes left
[    2.684280] ip (278) used greatest stack depth: 12368 bytes left
[    2.740156] ip (282) used greatest stack depth: 12352 bytes left
[    6.261607] ip (441) used greatest stack depth: 12296 bytes left
[  728.408124] blackhole_netdev_xmit(): Dropping skb.
[  728.408192] blackhole_netdev_xmit(): Dropping skb.
[  728.408229] blackhole_netdev_xmit(): Dropping skb.
[  728.408264] blackhole_netdev_xmit(): Dropping skb.
[  893.196576] blackhole_netdev_xmit(): Dropping skb.
[  893.196633] blackhole_netdev_xmit(): Dropping skb.
[  893.196663] blackhole_netdev_xmit(): Dropping skb.
[  893.196695] blackhole_netdev_xmit(): Dropping skb.
[ 1061.570784] blackhole_netdev_xmit(): Dropping skb.
[ 1061.570850] blackhole_netdev_xmit(): Dropping skb.
[ 1061.570881] blackhole_netdev_xmit(): Dropping skb.
[ 1061.570913] blackhole_netdev_xmit(): Dropping skb.
[ 1108.061407] blackhole_netdev_xmit(): Dropping skb.
[ 1108.061474] blackhole_netdev_xmit(): Dropping skb.
[ 1108.061524] blackhole_netdev_xmit(): Dropping skb.
[ 1108.061582] blackhole_netdev_xmit(): Dropping skb.
[ 1149.416413] blackhole_netdev_xmit(): Dropping skb.
[ 1149.416476] blackhole_netdev_xmit(): Dropping skb.
[ 1149.416531] blackhole_netdev_xmit(): Dropping skb.
[ 1149.416577] blackhole_netdev_xmit(): Dropping skb.
[ 1154.012632] blackhole_netdev_xmit(): Dropping skb.
[ 1154.012696] blackhole_netdev_xmit(): Dropping skb.
[ 1154.012744] blackhole_netdev_xmit(): Dropping skb.
[ 1154.012787] blackhole_netdev_xmit(): Dropping skb.
[ 1199.437154] blackhole_netdev_xmit(): Dropping skb.
[ 1199.437208] blackhole_netdev_xmit(): Dropping skb.
[ 1199.437242] blackhole_netdev_xmit(): Dropping skb.
[ 1199.437276] blackhole_netdev_xmit(): Dropping skb.
[ 1221.102085] blackhole_netdev_xmit(): Dropping skb.
[ 1221.102161] blackhole_netdev_xmit(): Dropping skb.
[ 1221.102208] blackhole_netdev_xmit(): Dropping skb.
[ 1221.102252] blackhole_netdev_xmit(): Dropping skb.