[    1.998640] ip (268) used greatest stack depth: 12552 bytes left
[    2.192384] ip (286) used greatest stack depth: 12360 bytes left
[    3.368289] ip (383) used greatest stack depth: 12304 bytes left
[   55.999168] netem: version 1.3
[  602.691864] tc (12967) used greatest stack depth: 11936 bytes left