[    1.769280] ip (250) used greatest stack depth: 12320 bytes left
[    2.136267] ip (280) used greatest stack depth: 12176 bytes left
[   51.542041] netem: version 1.3
[  119.188261] ip (2939) used greatest stack depth: 12160 bytes left
[  574.775142] tc (11920) used greatest stack depth: 11872 bytes left