[    1.900836] ip (256) used greatest stack depth: 12400 bytes left
[    2.250037] ip (281) used greatest stack depth: 12368 bytes left
[    2.360469] ip (290) used greatest stack depth: 12352 bytes left
[    9.617574] ip (840) used greatest stack depth: 12168 bytes left
[   51.975022] netem: version 1.3
[  235.329558] ip (3874) used greatest stack depth: 12040 bytes left