[    2.445742] ip (277) used greatest stack depth: 12360 bytes left
[    2.569323] ip (286) used greatest stack depth: 12344 bytes left
[    5.617650] ip (493) used greatest stack depth: 12192 bytes left
[   54.638389] netem: version 1.3
[  606.233075] tc (12617) used greatest stack depth: 11936 bytes left