[    1.988767] ip (270) used greatest stack depth: 12320 bytes left
[    2.070707] ip (279) used greatest stack depth: 12160 bytes left
[   47.676174] netem: version 1.3
[  273.348278] ip (4601) used greatest stack depth: 12048 bytes left
[  536.969705] tc (11962) used greatest stack depth: 11824 bytes left