[    1.809691] ip (254) used greatest stack depth: 12392 bytes left
[    2.259801] ip (285) used greatest stack depth: 12360 bytes left
[    2.376466] ip (294) used greatest stack depth: 12344 bytes left
[   29.953356] ip (1279) used greatest stack depth: 12192 bytes left
[   53.586862] netem: version 1.3