[    1.976455] ip (254) used greatest stack depth: 12392 bytes left
[    2.408056] ip (286) used greatest stack depth: 12192 bytes left
[   55.095364] netem: version 1.3
[  534.844438] ip (10588) used greatest stack depth: 12064 bytes left
[  606.887873] tc (12617) used greatest stack depth: 11936 bytes left