On 2023-04-18 14:01, Carlos E. R. wrote:

I haven't done that on openSUSE, but I have on my pfSense firewall. Here's the info.
https://forum.netgate.com/topic/163161/using-unique-local-addresses?_=1621521617928

I see. Oh, I only wanted to understand what those addresses were, generically. I can not change the router.

To do something similar, I would have to assign that address inside each machine, statically, and then write DNS entries. That's too much a chore for no advantage, as I can currently reach all my machines by name with IPv4. Well, most machines.

One thing you'll learn about IPv6 is you can have a LOT of addresses on a device. For example, with SLAAC, you have a link local address, a persistent global address and up to 7 temporary addresses. If you add ULA, that's another 8 and if you have more than one router, then you can have up to 8 more addresses, for each router that's on the network. You can even give routers priority. All kinds of fun things.

You might want to check if you can provide ULA from your modem. They can be useful, in cases where you don't have a persistent prefix. You can also set up a network for something like IoT, where you don't want access to the Internet and more.

If you want to learn about IPv6, I can recommend this book:
https://www.oreilly.com/library/view/ipv6-essentials-3rd/9781449335229/