[    2.079936] ip (277) used greatest stack depth: 12360 bytes left
[    3.384121] ip (384) used greatest stack depth: 12344 bytes left
[   52.559606] netem: version 1.3
[   60.967371] ip (2357) used greatest stack depth: 12296 bytes left
[  318.809961] ip (5176) used greatest stack depth: 12192 bytes left