[    1.838821] ip (249) used greatest stack depth: 12368 bytes left
[    2.261737] ip (279) used greatest stack depth: 12320 bytes left
[   39.285355] ip (1578) used greatest stack depth: 12272 bytes left
[   52.466648] netem: version 1.3
[  307.922472] ip (4774) used greatest stack depth: 12160 bytes left
[  580.840350] ip (11639) used greatest stack depth: 12128 bytes left