[    2.313844] ip (276) used greatest stack depth: 12360 bytes left
[    2.534574] ip (294) used greatest stack depth: 12344 bytes left
[    5.431288] ip (492) used greatest stack depth: 12288 bytes left
[   44.358062] ip (1793) used greatest stack depth: 12192 bytes left
[   57.901088] netem: version 1.3