[    2.331219] ip (285) used greatest stack depth: 12360 bytes left
[    4.848448] ip (498) used greatest stack depth: 12344 bytes left
[   56.268377] netem: version 1.3
[  438.738504] ip (8598) used greatest stack depth: 12064 bytes left
[  600.641898] tc (13804) used greatest stack depth: 11936 bytes left