[    1.924116] ip (252) used greatest stack depth: 12392 bytes left
[    2.379204] ip (283) used greatest stack depth: 12352 bytes left
[    3.387107] ip (351) used greatest stack depth: 12344 bytes left
[   55.892397] netem: version 1.3
[  613.503615] tc (11937) used greatest stack depth: 11936 bytes left