[    1.819097] ip (267) used greatest stack depth: 12328 bytes left
[    2.066211] ip (295) used greatest stack depth: 12200 bytes left
[    3.551371] ip (485) used greatest stack depth: 12168 bytes left
[   77.187920] ip (5320) used greatest stack depth: 12088 bytes left
[   77.621147] netem: version 1.3
[  642.516506] tc (26281) used greatest stack depth: 11864 bytes left