[    2.147686] ip (276) used greatest stack depth: 12360 bytes left
[    2.246700] ip (285) used greatest stack depth: 12344 bytes left
[   55.268003] netem: version 1.3
[  325.090373] ip (5416) used greatest stack depth: 12304 bytes left
[  332.065998] ip (5535) used greatest stack depth: 12288 bytes left
[  506.076369] ip (9992) used greatest stack depth: 12192 bytes left
[  594.108767] tc (12617) used greatest stack depth: 11936 bytes left