[    1.843703] ip (281) used greatest stack depth: 12320 bytes left
[    7.164855] ip (829) used greatest stack depth: 12144 bytes left
[   38.988107] ip (1977) used greatest stack depth: 12048 bytes left
[   45.665522] netem: version 1.3
[  545.119611] tc (11911) used greatest stack depth: 11832 bytes left