On 2023-04-21 16:28, Carlos E. R. wrote:

I see it does support Unique Local Addresses (ULA), according to page 53. This will allow you to use the IPv6 equivalent of RFC 1918 addresses. You can then configure your DNS server to provide ULA addresses, instead of relying on a changing prefix. I didn't notice a DNS server in it, but it appears you can say what server to use, so you could create one in Linux and point to it. You'd configure a DNS forwarder on a Linux box.

Sorry, I don't understand this at all.

Earlier you said it didn't support ULA, which it apparently does. This avoids the problem of the changing prefix, when working with local devices. You'd use the ULA address, instead of the global address. I also didn't see anything about a local DNS in that manual, though I could be wrong (yeah, I know, unlikely but it does happen. 😁). If it does support a local DNS server, great. You'd then point the host names at the ULA address. If it doesn't have a local DNS server, then you'd create a DNS forwarder on a Linux box. You'd then configure that gateway with your DNS server address and then point your server at some outside DNS.