I have no way to test this with the equipment I have, but what about opnsense on an x86-64 box and throw an sfp+ pcie card in there. You could then in theory turn off auto negotiation and set it to 2.5g. Has anyone out there tried this?
I’ve been running opnsense with my CenturyLink 1g setup, though I’m still using their ont to convert to copper, and been very happy with it.
I do almost exactly the same, except I have opnsense running on a cheap dual nic mini PC so I don’t have that dependency on my proxmox servers. The unifi stuff does need a controller, but they publish a free app that you can run instead of getting their hardware.
We had two of these that ended up sitting in my desk at work back around that time. They were sent to us free with hopes we would port our (shitty) android/iOS apps to it. One was a bit newer, but they both just felt shitty compared to the equivalent Nexus or iPhone of the time, so I never bothered trying to use it as a daily driver. I wasn’t even on the app dev team, no one else wanted them or cared at all. Was fun as a technical curiosity though.
No, the browser would still send YouTube.com as the host header. While yewtu.be could be configured to allow this to work, the TLS cert would not and the browser would get upset.