sntp: Add retry timeout delay on DNS resolution failure #78
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Introduce a delay before retrying DNS resolution for invalid NTP server names to prevent aggressive retry loops. Failed DNS queries now respect the configured SNTP_RETRY_TIMEOUT interval, reducing unnecessary network/CPU load while preserving server fallback behavior. Fixes issue with persistent DNS queries for invalid NTP server names.
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Introduce a delay before retrying DNS resolution for invalid NTP server names to prevent aggressive retry loops. Failed DNS queries now respect the configured SNTP_RETRY_TIMEOUT interval, reducing unnecessary network/CPU load while preserving server fallback behavior.
Fixes issue with persistent DNS queries for invalid NTP server names.
patch to upstream: https://savannah.nongnu.org/patch/?10518