[    1.554460] ip (248) used greatest stack depth: 12368 bytes left
[    1.873589] ip (278) used greatest stack depth: 12320 bytes left
[   45.366347] netem: version 1.3
[  325.429365] ip (5454) used greatest stack depth: 12272 bytes left
[  539.820430] tc (11915) used greatest stack depth: 11832 bytes left