[    1.838565] ip (251) used greatest stack depth: 12368 bytes left
[    2.301608] ip (290) used greatest stack depth: 12320 bytes left
[   55.151105] netem: version 1.3
[   86.947092] ip (2498) used greatest stack depth: 12272 bytes left
[  155.196198] ip (3051) used greatest stack depth: 12160 bytes left