[    1.392367] ip (217) used greatest stack depth: 12216 bytes left
[    1.469953] ip (239) used greatest stack depth: 11992 bytes left
[    2.093874] ip (406) used greatest stack depth: 11960 bytes left
[   51.104244] netem: version 1.3
[  547.811222] pm_nl_ctl (24832) used greatest stack depth: 11856 bytes left