[    1.370997] ip (222) used greatest stack depth: 12216 bytes left
[    1.463476] ip (249) used greatest stack depth: 11992 bytes left
[   17.228692] ip (1701) used greatest stack depth: 11960 bytes left
[   51.710870] netem: version 1.3
[  538.233394] pm_nl_ctl (24826) used greatest stack depth: 11784 bytes left