[    1.839205] ip (251) used greatest stack depth: 12392 bytes left
[    1.924774] ip (256) used greatest stack depth: 12344 bytes left
[   30.091800] ip (1222) used greatest stack depth: 12040 bytes left
[   52.084094] netem: version 1.3
[  593.983632] tc (11935) used greatest stack depth: 11936 bytes left