[    1.969437] ip (254) used greatest stack depth: 12392 bytes left
[    2.288216] ip (276) used greatest stack depth: 12360 bytes left
[    2.388503] ip (285) used greatest stack depth: 12344 bytes left
[   53.809666] netem: version 1.3
[  393.514296] ip (6860) used greatest stack depth: 12192 bytes left