[    2.391651] ip (276) used greatest stack depth: 12360 bytes left
[    2.496095] ip (285) used greatest stack depth: 12344 bytes left
[   56.052750] netem: version 1.3
[   65.265457] ip (2365) used greatest stack depth: 12160 bytes left
[   92.695877] ip (2644) used greatest stack depth: 12032 bytes left