[    1.882460] ip (250) used greatest stack depth: 12368 bytes left
[    2.290023] ip (281) used greatest stack depth: 12320 bytes left
[   52.266679] netem: version 1.3
[  448.934839] ip (7730) used greatest stack depth: 12272 bytes left
[  527.791091] ip (10543) used greatest stack depth: 12224 bytes left