[    1.589660] ip (249) used greatest stack depth: 12320 bytes left
[    1.957261] ip (288) used greatest stack depth: 12256 bytes left
[    3.585826] ip (444) used greatest stack depth: 12160 bytes left
[   46.499922] netem: version 1.3
[  535.399843] tc (11911) used greatest stack depth: 11872 bytes left