[    2.291882] ip (280) used greatest stack depth: 12368 bytes left
[    3.089448] ip (341) used greatest stack depth: 12352 bytes left
[   53.017363] netem: version 1.3
[  363.402118] ip (5426) used greatest stack depth: 12200 bytes left
[  536.796016] ip (10321) used greatest stack depth: 12072 bytes left