[    1.856199] ip (256) used greatest stack depth: 12392 bytes left
[    2.257687] ip (287) used greatest stack depth: 12360 bytes left
[    3.586390] ip (393) used greatest stack depth: 12344 bytes left
[   31.024145] ip (1289) used greatest stack depth: 12208 bytes left
[   40.652359] ip (1677) used greatest stack depth: 12192 bytes left
[   55.587823] netem: version 1.3
[  600.617340] tc (12964) used greatest stack depth: 11936 bytes left