ich purchased a Mini86 from the shop a couple of weeks ago. While device works in general (I use a headless setup), a few day after starting up, it goes offline. By that, I mean
It is not reachable via web browser
It is not reachable via ssh
It is not visible in the network any more
After that, it needs to be switched off and on again to recover. After 2-3 days, this happens over again.
Any suggestions for debugging are welcome.