[    2.230456] ip (272) used greatest stack depth: 12368 bytes left
[    2.478041] ip (290) used greatest stack depth: 12352 bytes left
[    3.846661] ip (387) used greatest stack depth: 12312 bytes left
[   55.704178] netem: version 1.3
[  582.021887] tc (12609) used greatest stack depth: 11936 bytes left