Miroslav Lichvar b90d2c084f ntp: randomize replacement interval ...

Replacement attempts are globally rate limited to one per 7*2^8 seconds
to limit the rate of DNS requests for public servers like pool.ntp.org.
If multiple sources are repeatedly attempting replacement (at their
polling intervals), one source can be getting all attempts for periods
of time.

Use a randomly generated interval to randomize the order of source
replacements without changing the average rate.

2023-06-08 16:14:48 +02:00

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