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Expected Behaviour:
normal work of pi-hole.
Actual Behaviour:
every 1-2 days, often at night FTL went offline and lost connection to API. I can only restart the rp3 and after that pi-hole runs fine. I have tried to do pihole -r. A log cannot be uploaded during the event, but I have done a log after restarting.
Pi-hole connects to dnscrypt on port 5300 but dnscrypt seems to work even if FTL is offline. So I think it must be a problem of pi-hole.
OK. Understood.
Unfortunately after switching to the fix it happened again. I have to stop and then to start the FTL service (sudo service pihole-FTL stop, sudo service pihole-FTL start). So it seems, that the fix does not solve my problem. I will see, if it will happen again.