[    2.326398] ip (275) used greatest stack depth: 12360 bytes left
[    3.903056] ip (390) used greatest stack depth: 12344 bytes left
[    5.073911] ip (472) used greatest stack depth: 12192 bytes left
[   56.838125] netem: version 1.3
[  371.487021] ip (5995) used greatest stack depth: 12032 bytes left