[    1.855248] ip (249) used greatest stack depth: 12368 bytes left
[    2.241996] ip (279) used greatest stack depth: 12320 bytes left
[   17.514659] ip (1032) used greatest stack depth: 12272 bytes left
[   52.690790] netem: version 1.3
[  497.938123] ip (9534) used greatest stack depth: 12144 bytes left