[    1.898176] ip (251) used greatest stack depth: 12400 bytes left
[    2.229402] ip (272) used greatest stack depth: 12368 bytes left
[    2.343712] ip (281) used greatest stack depth: 12352 bytes left
[   39.716466] ip (1588) used greatest stack depth: 12312 bytes left
[   52.192257] netem: version 1.3