My HA instance has for some weeks know sporadically lost connection to different internet resources, including Nabu Casa. Also weather service and other API is losing connection. But I can connect to HA locally, and I also have a Ping to Cloudflare DNS, and that does not gets disconnects.
After a restart of HA (not hw) all is fine for some time and then I lose connection again.
I am running HAOS on Genric_x86 and it has been working for years know. But this started around start of september.
My network is Unifi and I have a static IP set in the Unifi controller (not in HA).
I can’t seem to find anything in the logs, so could someone help on how to proceed troubleshooting?
If you have a coin cell battery in the machine, then replace that.
It sounds like the RTC might have wrong time set, which can happen when the battery has died.
I will check that. But just out of curiosity, how does the RTC in the BIOS affect the internet connectivity?
HTTPS is encrypted and encryption have a timestamp, which prevents a malicious actor from recording a connections packets and then send them later.
If the time is more than usually 5 minutes off from the timestamp then the connection is assumed being a replay attack and it is dropped.
HA do regular syncs with time servers on the internet, which I think is each couple of hours, and it also do a sync on a restart. The connection will work after this syncs, but if the battery is making the RTC malfunction, then it will eventually be out of sync again soon.
This fits with your description of sporadic dropouts and a restart solving it for some time.
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