[    1.869207] ip (253) used greatest stack depth: 12432 bytes left
[    2.153311] ip (278) used greatest stack depth: 12320 bytes left
[    7.522828] ip (744) used greatest stack depth: 12272 bytes left
[   38.178047] ip (1691) used greatest stack depth: 12048 bytes left
[   48.384328] netem: version 1.3
[  570.192581] tc (11933) used greatest stack depth: 11872 bytes left