[    2.549716] ip (286) used greatest stack depth: 12360 bytes left
[    2.669745] ip (295) used greatest stack depth: 12344 bytes left
[   56.000949] netem: version 1.3
[  531.645102] ip (10588) used greatest stack depth: 12064 bytes left
[  603.147439] tc (12616) used greatest stack depth: 11936 bytes left