[    2.102009] ip (251) used greatest stack depth: 12912 bytes left
[    2.330057] ip (263) used greatest stack depth: 12576 bytes left
[    2.453581] ip (272) used greatest stack depth: 12320 bytes left
[   19.734252] ip (1041) used greatest stack depth: 12272 bytes left
[   56.149684] netem: version 1.3