[    1.868805] ip (251) used greatest stack depth: 12368 bytes left
[    2.313009] ip (281) used greatest stack depth: 12320 bytes left
[    4.800815] ip (473) used greatest stack depth: 12160 bytes left
[   51.870739] netem: version 1.3
[  349.240470] ip (5641) used greatest stack depth: 12144 bytes left