[    1.931814] ip (258) used greatest stack depth: 12392 bytes left
[    2.319942] ip (286) used greatest stack depth: 12344 bytes left
[   57.509571] netem: version 1.3
[  621.654415] ip (13780) used greatest stack depth: 12304 bytes left
[  621.972238] tc (13800) used greatest stack depth: 11936 bytes left