[    3.341747] ip (278) used greatest stack depth: 12368 bytes left
[    3.475869] ip (287) used greatest stack depth: 12352 bytes left
[    9.116479] ip (657) used greatest stack depth: 12072 bytes left
[   55.232966] netem: version 1.3
[  574.605027] tc (11919) used greatest stack depth: 11936 bytes left