[    1.689402] ip (249) used greatest stack depth: 12368 bytes left
[    1.929102] ip (270) used greatest stack depth: 12320 bytes left
[   48.369704] netem: version 1.3
[  475.011969] ip (10549) used greatest stack depth: 12160 bytes left
[  530.560577] tc (11919) used greatest stack depth: 11824 bytes left