[    2.166485] ip (269) used greatest stack depth: 12360 bytes left
[    3.519781] ip (379) used greatest stack depth: 12344 bytes left
[   39.291445] ip (1564) used greatest stack depth: 12200 bytes left
[   52.211933] netem: version 1.3
[  119.820609] ip (2748) used greatest stack depth: 12136 bytes left