Hairpinning the local domain in Ipfire?

im coming from arkos, since its closed its doors. Today i did a fresh install of yuno Host. At the post install process, you have to ad a domain…
I set a custom damoin since its only in my local network in use and i dont want to use it out side. Why is it showing me, if i want to log in at the shell an outside IP ? -its defenltly an ip6
Edit: Its an ip:4 and Yuno host is showing my Dynamic ip … kind of silly my fault
How can i add in ipfires Dns my link to the new local domain ?

best regards Threadripper