[    1.858481] ip (252) used greatest stack depth: 12376 bytes left
[    2.176037] ip (274) used greatest stack depth: 12344 bytes left
[    2.279383] ip (283) used greatest stack depth: 12328 bytes left
[    7.680981] ip (673) used greatest stack depth: 12048 bytes left
[   54.717615] netem: version 1.3
[  605.653459] tc (12617) used greatest stack depth: 11920 bytes left