[    2.538537] ip (216) used greatest stack depth: 12216 bytes left
[    2.594418] ip (229) used greatest stack depth: 12184 bytes left
[    2.665062] ip (257) used greatest stack depth: 11976 bytes left
[   31.256426] ip (2585) used greatest stack depth: 11960 bytes left
[   52.681021] netem: version 1.3
[  532.929244] pm_nl_ctl (24680) used greatest stack depth: 11784 bytes left