[   22.849562] ip (1865) used greatest stack depth: 11976 bytes left
[   51.906274] netem: version 1.3
[   65.417034] ip (4647) used greatest stack depth: 11912 bytes left
[   89.968974] ip (5016) used greatest stack depth: 11904 bytes left
[  499.863182] tc (20918) used greatest stack depth: 11704 bytes left