[    1.576227] ip (248) used greatest stack depth: 12368 bytes left
[    1.794329] ip (270) used greatest stack depth: 12320 bytes left
[   45.610222] netem: version 1.3
[   53.567440] ip (2227) used greatest stack depth: 12272 bytes left
[  103.397925] ip (2731) used greatest stack depth: 12160 bytes left