[    1.867826] ip (258) used greatest stack depth: 12392 bytes left
[    2.234671] ip (286) used greatest stack depth: 12344 bytes left
[   56.056602] netem: version 1.3
[  221.269210] ip (3934) used greatest stack depth: 12064 bytes left
[  616.579022] tc (12612) used greatest stack depth: 11936 bytes left