[    2.279602] ip (276) used greatest stack depth: 12360 bytes left
[    2.502692] ip (294) used greatest stack depth: 12344 bytes left
[   42.426289] ip (1793) used greatest stack depth: 12304 bytes left
[   47.328419] ip (2126) used greatest stack depth: 12160 bytes left
[   54.182717] netem: version 1.3