[    1.731214] ip (248) used greatest stack depth: 12632 bytes left
[    1.904874] ip (260) used greatest stack depth: 12344 bytes left
[    8.997414] ip (847) used greatest stack depth: 12024 bytes left
[   49.302069] netem: version 1.3
[  567.770878] tc (11911) used greatest stack depth: 11832 bytes left