A lot of people want to run their own webservers from home, and here in the UK everyone is behind a NAT and only has IPv4.
I had a discussion about this feature to make sure I was not missing a setting
Cannot use KeyHelp behind a NAT
One of my solutions was the ability to add a custom IP option to: Settings --> Configuration --> IP Addresses - This could be then used to build all configs as normal and this IP would not be present on the NIC.
Apart from the fact, that running a Webserver from home behind a (IPv4)NAT makes no sense at all...
You can simply tunnel your traffic around the NAT using a VPS and Wireguard with a public ip.
Regarding IPv6 ... well, use a Tunnelbroker or so.
Then I will repeat it again officially:
Please do not push feature requests.
Our developer team will post here if necessary.
Pushing feature requests will end in locked threads.