[    2.002075] ip (248) used greatest stack depth: 12376 bytes left
[    2.332726] ip (270) used greatest stack depth: 12344 bytes left
[    3.326277] ip (349) used greatest stack depth: 12328 bytes left
[    9.507374] ip (787) used greatest stack depth: 12144 bytes left
[   54.312571] netem: version 1.3