[    1.867833] ip (249) used greatest stack depth: 12368 bytes left
[    2.333499] ip (279) used greatest stack depth: 12320 bytes left
[    9.464014] ip (751) used greatest stack depth: 12048 bytes left
[   55.235539] netem: version 1.3
[   74.490100] ip (2383) used greatest stack depth: 12032 bytes left