[    1.989471] ip (278) used greatest stack depth: 12360 bytes left
[    6.654401] ip (684) used greatest stack depth: 12344 bytes left
[   50.694244] ip (2238) used greatest stack depth: 12304 bytes left
[   50.920178] netem: version 1.3
[  422.497179] ip (7688) used greatest stack depth: 12192 bytes left