[    2.387838] ip (285) used greatest stack depth: 12360 bytes left
[    3.836778] ip (400) used greatest stack depth: 12344 bytes left
[   43.197899] ip (1905) used greatest stack depth: 12288 bytes left
[   56.943044] netem: version 1.3
[  629.284871] tc (13805) used greatest stack depth: 11896 bytes left