[    3.910740] ip (463) used greatest stack depth: 12272 bytes left
[   46.954579] netem: version 1.3
[   55.967939] ip (2229) used greatest stack depth: 12160 bytes left
[  380.007491] ip (6493) used greatest stack depth: 12016 bytes left
[  556.707985] tc (11905) used greatest stack depth: 11872 bytes left