[    1.596225] ip (248) used greatest stack depth: 12368 bytes left
[    1.924136] ip (278) used greatest stack depth: 12320 bytes left
[   47.445991] netem: version 1.3
[   53.714227] ip (2246) used greatest stack depth: 12272 bytes left
[  256.746824] ip (4410) used greatest stack depth: 12160 bytes left