[    1.970618] ip (246) used greatest stack depth: 12352 bytes left
[    2.505444] ip (277) used greatest stack depth: 12320 bytes left
[   22.352721] ip (2216) used greatest stack depth: 12160 bytes left
[  658.403702] blackhole_netdev_xmit(): Dropping skb.
[  658.403782] blackhole_netdev_xmit(): Dropping skb.
[  658.403831] blackhole_netdev_xmit(): Dropping skb.
[  658.403876] blackhole_netdev_xmit(): Dropping skb.
[  937.690865] blackhole_netdev_xmit(): Dropping skb.
[  937.690939] blackhole_netdev_xmit(): Dropping skb.
[  937.691006] blackhole_netdev_xmit(): Dropping skb.
[  937.691073] blackhole_netdev_xmit(): Dropping skb.
[  950.934905] blackhole_netdev_xmit(): Dropping skb.
[  950.934961] blackhole_netdev_xmit(): Dropping skb.
[  950.934998] blackhole_netdev_xmit(): Dropping skb.
[  950.935039] blackhole_netdev_xmit(): Dropping skb.
[  955.832238] blackhole_netdev_xmit(): Dropping skb.
[  955.832299] blackhole_netdev_xmit(): Dropping skb.
[  955.832344] blackhole_netdev_xmit(): Dropping skb.
[  955.832391] blackhole_netdev_xmit(): Dropping skb.
[ 1028.773597] blackhole_netdev_xmit(): Dropping skb.
[ 1028.773649] blackhole_netdev_xmit(): Dropping skb.
[ 1028.773680] blackhole_netdev_xmit(): Dropping skb.
[ 1028.773711] blackhole_netdev_xmit(): Dropping skb.
[ 1185.141070] blackhole_netdev_xmit(): Dropping skb.
[ 1185.141117] blackhole_netdev_xmit(): Dropping skb.
[ 1185.141147] blackhole_netdev_xmit(): Dropping skb.
[ 1185.141172] blackhole_netdev_xmit(): Dropping skb.
[ 1195.970326] blackhole_netdev_xmit(): Dropping skb.
[ 1195.970374] blackhole_netdev_xmit(): Dropping skb.
[ 1195.970403] blackhole_netdev_xmit(): Dropping skb.
[ 1195.970428] blackhole_netdev_xmit(): Dropping skb.