[    1.950692] ip (254) used greatest stack depth: 12392 bytes left
[    2.284722] ip (276) used greatest stack depth: 12360 bytes left
[    2.403190] ip (285) used greatest stack depth: 12344 bytes left
[   53.501978] netem: version 1.3
[  595.345366] tc (12618) used greatest stack depth: 11936 bytes left