[   29.778905] ip (2565) used greatest stack depth: 12104 bytes left
[   49.786115] ip (3958) used greatest stack depth: 11928 bytes left
[   51.043035] netem: version 1.3
[   61.307445] ip (4485) used greatest stack depth: 11896 bytes left
[  531.369444] tc (20927) used greatest stack depth: 11680 bytes left