[    2.198370] ip (255) used greatest stack depth: 12400 bytes left
[    2.569085] ip (274) used greatest stack depth: 12368 bytes left
[    2.717887] ip (283) used greatest stack depth: 12352 bytes left
[   46.323754] ip (1875) used greatest stack depth: 12072 bytes left
[   56.898286] netem: version 1.3