[    2.150038] ip (253) used greatest stack depth: 12368 bytes left
[    2.505846] ip (279) used greatest stack depth: 12320 bytes left
[   31.689517] ip (1229) used greatest stack depth: 12272 bytes left
[   55.514029] netem: version 1.3
[  579.224370] tc (11922) used greatest stack depth: 11872 bytes left