[    2.146459] ip (277) used greatest stack depth: 12320 bytes left
[    9.701186] ip (930) used greatest stack depth: 12272 bytes left
[   15.786435] ip (1033) used greatest stack depth: 12048 bytes left
[   47.722477] netem: version 1.3
[  537.308592] tc (11914) used greatest stack depth: 11872 bytes left