[    2.448086] ip (278) used greatest stack depth: 12360 bytes left
[    2.569496] ip (287) used greatest stack depth: 12344 bytes left
[    3.892722] ip (375) used greatest stack depth: 12064 bytes left
[   55.013258] netem: version 1.3
[  597.522365] tc (12617) used greatest stack depth: 11936 bytes left