[    2.036389] ip (251) used greatest stack depth: 12368 bytes left
[    2.400039] ip (272) used greatest stack depth: 12320 bytes left
[   45.488943] ip (1890) used greatest stack depth: 12160 bytes left
[   54.019232] netem: version 1.3
[  587.613241] tc (11907) used greatest stack depth: 11872 bytes left