How do I access the "permanent" IPv6 address?

Question

In Windows 11 (same as 10 I think), the command ipconfig gives something like this

   Connection-specific DNS Suffix  . : lan
   IPv6 Address. . . . . . . . . . . : ...:5c69
   Temporary IPv6 Address. . . . . . : ...:d046
   Link-local IPv6 Address . . . . . : fe80::...:73ee%14
   IPv4 Address. . . . . . . . . . . : 192.168...
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : fe80::...:d531%14
                                       192.168...

Now when I setup the Google Nest Pro router it shows this host with a different IPv6 address but I go ahead and add the port forwarding (443, I am running a local https server), then go to GoDaddy and add an AAAA record.

If I use the "IPv6 Address" in the above (...5c69), access to my domain from outside timed out.
If I use the "Temporary IPv6 Address (...d046), it will success but then I have to set it again because it changes after some time as it is "Temporary".

What can I do to make the ...5c69 address accessible from outside?

Update (2 days after initial post)

The "Temporary" address (...d046) still works. I don't know how long it would last, it is totally up to the router and I guess once I reset the router I will have to update it. Given all that, it would still be good to find a permanent solution.

score 0 · Accepted Answer · answered Jan 24 '24 at 21:34

Indeed, the permanent IP address does work, just that the way it was tested has problems.

After a week, the "Temporary" IPv6 address is no longer appear in ipconfig output. But the permanent IP (...5c69) is still there.

Updated GoDaddy with the permanent IP, then connect to a VPS I own and run

ping -6 [mydomain]

Although this is not successful due to the firewall does not allow ping, it correctly resolves the domain to the IPv6 address. Then I run

curl https://[mydomain]

when locally running my web app. It took a while longer than usual, but ended up showing the expected web content.

I guess last time I was not patient enough to wait for the browser cache etc to update.

How do I access the "permanent" IPv6 address?

Update (2 days after initial post)

1 Answers1