

Yeah I understand that. And as I noted with the exception of firmware which almost universally requires running very out of date hardware I do the same. I’d like to get there with my phone but I haven’t managed it yet. I have written off firmware being FOSS because as mentioned. You almost always need very old hardware for that outside of embedded devices. And if you go down the firmware rabbit hole you probably have to draw the line somewhere. Platform firmware is the one everyone focuses on but what about GPU or NIC firmware? What about microcode or firmware embedded in the IME or PSP? Yes you can sometimes neuter the IME but that doesn’t apply to all CPUs. It’s just an unwinnable rabbit hole without going to a fully open computing platform.
Or just use NAT64? That’s the conventional way to do this. Yes a VPN works but it’s a tunnel, NAT64 just maps the entire IPv4 internet into v6 space and clients just use native v6 to get out. It’s easy to setup on a VPS and there are even public instances. https://nat64.net/