Comment by dynip

But you do touch DNS :) and the idea here is to create as little friction or easy setup as possible with either fixed, dynamic or unknown ips.

One example I used it for just a few days ago was to set up dual ipsec tunnels for redundancy in fortigate in a remote warehouse. with the snippets I can just add a byod domain and paste the config into the cli and ship the devices. when they connect it it dials up, updates the ip in the dashboard (with notification that it has changed) and the vpn tunnels comes up automatically. it is available as road warriors as well, or dialup ipsec tunnels but I want dual initiator functionality.

Maybe this reply isnt really what the site is for but rather a subset of what can be done.

have a look at https://dynip.dev/guides/ I tried to add substantial information on what can be done