[    1.769213] ip (255) used greatest stack depth: 12392 bytes left
[    2.138535] ip (287) used greatest stack depth: 12360 bytes left
[    2.228600] ip (296) used greatest stack depth: 12064 bytes left
[   55.723482] netem: version 1.3
[  600.945787] tc (12963) used greatest stack depth: 11936 bytes left