[    2.169182] ip (271) used greatest stack depth: 12360 bytes left
[    2.371020] ip (289) used greatest stack depth: 12352 bytes left
[    4.541504] ip (464) used greatest stack depth: 12344 bytes left
[    8.221927] ip (744) used greatest stack depth: 12200 bytes left
[   55.170910] netem: version 1.3
[  595.574944] tc (11925) used greatest stack depth: 11936 bytes left