[    1.759991] ip (250) used greatest stack depth: 12368 bytes left
[    2.049217] ip (271) used greatest stack depth: 12320 bytes left
[   36.973617] ip (1467) used greatest stack depth: 12160 bytes left
[   51.161588] netem: version 1.3
[  583.784808] tc (11915) used greatest stack depth: 11872 bytes left