[    2.177125] ip (258) used greatest stack depth: 12392 bytes left
[    2.491018] ip (279) used greatest stack depth: 12360 bytes left
[    2.610592] ip (288) used greatest stack depth: 12344 bytes left
[    3.839555] ip (376) used greatest stack depth: 12160 bytes left
[   57.039224] netem: version 1.3