"NetworkManager not correctly configured" + unsupported state warning

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Describe the issue you are experiencing

Today while trying to do an addon upgrade I discovered an issue I've seen (and fixed by restarting HA OS/the host) before:

https://github.com/home-assistant/supervisor/issues/5249

Addon upgrade didn't do anything. According to supervisor logs, nothing happened. I restarted the supervisor and was able to perform the addon updates afterwards, but at the same time a problem was raised:

(same for the observer)

...which redirects to https://www.home-assistant.io/more-info/unsupported/network_manager

At the same time, /config/network does not properly (or at all) show network device information anymore:

Meanwhile I'm very sure this is a HA OS issue. As I don't want to run into this on a monthly basis (first occured at 2024-08-14, now today at 2024-09-28), I created this issue with some host logs attached.

I believe this "always" happens after running HA OS for a longer time:

• 2024-08-14: host up and running for ~ 24 days, RAM usage ~ 40 %, SWAP usage ~ 36 %
• 2024-09-28: host up and running for ~ 34 days, RAM usage ~ 40 %, SWAP usage ~ 23 %

On 2024-08-14 at some point I had to restart the host as the whole system became heavily unusable (unresponsive, CPU at 100 %, load-1 far beyond > 15, everything crazy).

Hopefully someone will pick this up quickly (few hours/half a day at best) before I need to apply the workaround (I fear the host might run into similiar instability issues again) and reboot the host to regain a supported, fully working system. Currently I can very likely dig for logs and test stuff, after the reboot usually everything's gone (ha host logs -b-1 -n1000 gives no logs).

What operating system image do you use?

rpi4-64 (Raspberry Pi 4/400 64-bit OS)

What version of Home Assistant Operating System is installed?

12.4

Did the problem occur after upgrading the Operating System?

No

Hardware details

4 usb devices attached

• UPS
• ZigBee stick (with extension cable)
• DuoFern stick (with extension cable)
• external NVMe disk (only attached, not used at all yet)

Steps to reproduce the issue

1. Use HA OS (and HA) for a longer time like 3 to 5 weeks without any restart/reboot
2. See network based issues like supervisor unable to fetch and perform updates etc.

Anything in the Supervisor logs that might be useful for us?

No, nothing suspicious at all

Anything in the Host logs that might be useful for us?

Yes, very interesting (captured with `ha host logs -n1000` as the UI limits the output to a quite short period of time). To what I see, everything before "2024-09-28 05:29:*" is quite normal. Then some kind of "thing" (incident) happened and network related stuff broke, please interpret this on your own:

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(edit: see next comment(s) as GitHub noted "Comment is too long (maximum is 65536 characters)")

System information

No response

Additional information

• On 2024-08-25 I applied the "dtoverlay=dwc2" in config.txt (see https://github.com/home-assistant/operating-system/issues/3362#issuecomment-2308786521) and rebooted the host (last reboot until today), just to mention.
• RAM usage (trying to find a pattern - 2024-08-14 and 2024-09-28)