Pi-hole DNS intermittently gets no reply

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1

Expected Behaviour:

When enabled, Pi-hole resolves benign DNS requests and blocks those defined by blacklists.
When disabled, Pi-holes resolves all DNS requests.

Actual Behaviour:

When enabled, Pi-hole intermittently fails to resolve DNS requests entirely. Tailing the log shows that DNS requests are sent but not reply comes back. Every 3-5 minutes, DNS request replies come back for about a minute, then the replies stop again.
When disabled, Pi-hole resolves all DNS requests. (as expected)

Debug Token:

https://tricorder.pi-hole.net/hy2sb8c9fn

2

Can you provide some example output from /var/log/pihole.log showing these transactions and delayed replies?

3

Thank you for your response.
I've spent hours troubleshooting this (package updates, service restarts, ntp update, reboots, etc.) before making a post, and as soon as I enabled pi-hole again to share the pattern in the logs it somehow decided to work again without any hiccups... Sorry.

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