[    1.694543] ip (249) used greatest stack depth: 12368 bytes left
[    1.999720] ip (280) used greatest stack depth: 12320 bytes left
[    6.738980] ip (746) used greatest stack depth: 12048 bytes left
[   46.454257] netem: version 1.3
[  527.268082] tc (11920) used greatest stack depth: 11872 bytes left