[    2.502871] ip (222) used greatest stack depth: 12216 bytes left
[    4.290739] ip (704) used greatest stack depth: 12168 bytes left
[   51.953734] netem: version 1.3
[   58.037972] ip (4460) used greatest stack depth: 11984 bytes left
[   86.918411] ip (5034) used greatest stack depth: 11936 bytes left
[  494.470709] tc (21099) used greatest stack depth: 11864 bytes left