[    1.987451] ip (260) used greatest stack depth: 12392 bytes left
[    2.169062] ip (277) used greatest stack depth: 12360 bytes left
[    2.252580] ip (286) used greatest stack depth: 12328 bytes left
[    2.336511] ip (295) used greatest stack depth: 12168 bytes left
[   91.210221] netem: version 1.3
[  642.574338] tc (26283) used greatest stack depth: 11864 bytes left