[    2.102409] ip (249) used greatest stack depth: 12368 bytes left
[    2.532039] ip (279) used greatest stack depth: 12320 bytes left
[   38.616658] ip (1467) used greatest stack depth: 12048 bytes left
[   52.867570] netem: version 1.3
[  367.098973] ip (6024) used greatest stack depth: 12032 bytes left