[    1.803670] ip (248) used greatest stack depth: 12368 bytes left
[    2.043167] ip (270) used greatest stack depth: 12320 bytes left
[   48.631501] netem: version 1.3
[   84.597249] ip (2463) used greatest stack depth: 12000 bytes left
[  555.136989] tc (11922) used greatest stack depth: 11872 bytes left