[    2.236168] ip (286) used greatest stack depth: 12360 bytes left
[    2.328192] ip (295) used greatest stack depth: 12344 bytes left
[   40.794722] ip (1786) used greatest stack depth: 12240 bytes left
[   51.422355] netem: version 1.3
[  594.376037] tc (12617) used greatest stack depth: 11896 bytes left