[    1.864328] ip (254) used greatest stack depth: 12296 bytes left
[   50.835471] ip (2233) used greatest stack depth: 12248 bytes left
[   51.075530] netem: version 1.3
[  398.458224] ip (6955) used greatest stack depth: 12072 bytes left
[  596.150157] tc (12613) used greatest stack depth: 11936 bytes left