[    1.690092] ip (249) used greatest stack depth: 12368 bytes left
[    1.979764] ip (279) used greatest stack depth: 12320 bytes left
[    2.050632] ip (288) used greatest stack depth: 12272 bytes left
[    6.011607] ip (644) used greatest stack depth: 12048 bytes left
[   47.171320] netem: version 1.3