[    2.358891] ip (271) used greatest stack depth: 12320 bytes left
[   55.257566] netem: version 1.3
[  273.358267] ip (4193) used greatest stack depth: 12272 bytes left
[  446.754639] ip (7729) used greatest stack depth: 12160 bytes left
[  459.894441] ip (7929) used greatest stack depth: 12048 bytes left