[    2.441640] ip (271) used greatest stack depth: 12320 bytes left
[   43.568906] ip (1691) used greatest stack depth: 12272 bytes left
[   55.366732] netem: version 1.3
[  489.460937] ip (7931) used greatest stack depth: 12128 bytes left
[  609.226541] tc (11914) used greatest stack depth: 11872 bytes left