[    2.289393] ip (248) used greatest stack depth: 12384 bytes left
[    2.514633] ip (260) used greatest stack depth: 12336 bytes left
[   50.310166] ip (2095) used greatest stack depth: 12176 bytes left
[   50.647283] netem: version 1.3
[  580.309743] tc (11901) used greatest stack depth: 11872 bytes left