[    2.033549] ip (257) used greatest stack depth: 12392 bytes left
[    2.459474] ip (285) used greatest stack depth: 12360 bytes left
[    2.569374] ip (294) used greatest stack depth: 12344 bytes left
[   10.776782] ip (893) used greatest stack depth: 12192 bytes left
[   53.708908] netem: version 1.3
[  606.511194] tc (12830) used greatest stack depth: 11936 bytes left