[    2.508872] ip (286) used greatest stack depth: 12360 bytes left
[    5.294396] ip (483) used greatest stack depth: 12344 bytes left
[   55.573600] netem: version 1.3
[  394.078133] ip (6675) used greatest stack depth: 12192 bytes left
[  606.282300] tc (12964) used greatest stack depth: 11936 bytes left