[    3.437531] ip (286) used greatest stack depth: 12360 bytes left
[    6.870628] ip (492) used greatest stack depth: 12344 bytes left
[   60.607537] netem: version 1.3
[  118.918331] ip (2769) used greatest stack depth: 12304 bytes left
[  379.171745] ip (5839) used greatest stack depth: 12064 bytes left