[    1.723985] ip (247) used greatest stack depth: 12368 bytes left
[    2.037032] ip (277) used greatest stack depth: 12320 bytes left
[    7.308720] ip (744) used greatest stack depth: 12272 bytes left
[   47.196899] netem: version 1.3
[  357.849534] ip (5639) used greatest stack depth: 12128 bytes left