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860702e9dc
* Prevent large spikes in propagation delay
A few tweaks
- Large spike in propagation delay due to congested channel results in
long term estimate getting high value. Ignore outliers in long term
estimate.
- Introduce a new field for adjusted arrival time as adjusting the
arrival time in place meant it got applied again across the relay and
that caused different propagation delay on remote nodes.
- Reset path change counters as long as there is any sample that is not
higher than the multiple of long term. There was a case of
o Sample with high value that triggered path change start.
o Then some samples with high enough delta, but did not meet the
criteria for increasing counter further.
o Some time later, another sample met the threshold and that triggered
a path change re-init.
* do not adapt to large delta