[    3.933649] ip (671) used greatest stack depth: 12296 bytes left
[    6.450265] ip (1354) used greatest stack depth: 12056 bytes left
[   17.654182] ip (1677) used greatest stack depth: 12024 bytes left
[   51.870445] netem: version 1.3
[  547.624517] pm_nl_ctl (24839) used greatest stack depth: 11864 bytes left