[    2.481356] ip (276) used greatest stack depth: 12360 bytes left
[    2.608042] ip (285) used greatest stack depth: 12344 bytes left
[   55.323144] netem: version 1.3
[   64.691500] ip (2372) used greatest stack depth: 12064 bytes left
[  604.230446] tc (12616) used greatest stack depth: 11936 bytes left