I want to buy a new OpenWRT compatible router and am looking for a recommendation what to buy.
I'm not sure how unusual it is what I would like to do, namely:
there are two connections to the internet: the preferred one is via a wireless network where the router has to act as a client; this is not always available though and when this goes out of reach, I would like the router to automatically fall back to a mobile connection for which I have a sim card, 4G would currently be good enough, if available 5G would be nicer just to be future-proof. I'm hoping the failover thing can be implemented with a solution such as mwan3 with OpenWRT.
some client devices will connect via RJ45, some others need wireless, so the router must also act as an AP for a WiFi network at the same time; together with the above this necessitates at least two fully independent wireless interfaces where one can be the AP and the other the client.
first and foremost, I need the biggest possible stability. I need this to work whether I'm around or not around and when something disconnects it has to recover by itself. A device that acts up and needs manual attention every other day is absolutely not an option.
Do you have any recommendations on a device that could do this? I'm perfectly willing to pay a bit more to get a high quality device that only needs setting up once and then just works for a very extended period of time.
Any advice greatly appreciated!