[    1.395729] ip (217) used greatest stack depth: 12216 bytes left
[    1.527791] ip (258) used greatest stack depth: 12168 bytes left
[    2.114555] ip (389) used greatest stack depth: 11872 bytes left
[   52.185053] netem: version 1.3
[  512.975975] tc (20924) used greatest stack depth: 11704 bytes left