I am looking for a router, and OpenWRT came up. I was looking at their table of hardware and the ASUS RT-AC3100 seemed like a good option, as its cheap used, (~$40 USD) and supported by the latest OpenWRT version.
Thing is, its EOL, per Asus. Does this mean that it won’t be supported on OpenWRT for much longer?
Is there a way to see or estimate when a router will no longer work on OpenWRT?


Yeah, not having cake sqm is the one thing that will probably kill Opnsense as a choice for some people. That’s not to say you cannot get excellent results with fq_codel, because you absolutely can (I actively use both OpenWRT and OPNSense on different network applications personally). It is definitely more work to get good results though. OPNSense’s wireguard support has been excellent for a number of years now, and it’s exclusively what I use for tunneling in a VPC I rent.
If you’re particularly constricted on host hardware and need a lightweight router to manage multiple other VMs on said host, I could definitely see the benefits of running a minimal OpenWRT over OPNSense in that case.