[    1.877731] ip (269) used greatest stack depth: 12320 bytes left
[    5.801721] ip (641) used greatest stack depth: 12048 bytes left
[   26.869191] ip (1230) used greatest stack depth: 12032 bytes left
[   46.676819] netem: version 1.3
[  570.554106] tc (12074) used greatest stack depth: 11968 bytes left