[    1.886584] ip (268) used greatest stack depth: 12296 bytes left
[    2.026432] ip (286) used greatest stack depth: 12200 bytes left
[    2.096261] ip (295) used greatest stack depth: 12168 bytes left
[   77.481515] netem: version 1.3
[  647.706886] tc (26287) used greatest stack depth: 11864 bytes left