Feature request: DuckDNS Addon simpler local https connection

The Feature request:

Set the ip addresses per domain:

The current duckdns-addon configuration.

lets_encrypt:
  accept_terms: true
  certfile: fullchain.pem
  keyfile: privkey.pem
token: '!secret DuckDNS-Token'
domains:
  - homeassistant.duckdns.org
  - homeassistant-local.duckdns.org
aliases: []
seconds: 300
The requested duckdns-addon configuration:

lets_encrypt:
  accept_terms: true
  certfile: fullchain.pem
  keyfile: privkey.pem
token: '!secret DuckDNS-Token'
domains:
  - homeassistant.duckdns.org
  - homeassistant-local.duckdns.org
       Ip4v: 192.168.1.2
aliases: []
seconds: 300

Context:

My family got interested in Home Assistant. But they still have the isp router.
Which means that it isn’t possible to set a DNS server, nor the option to change the DCHP server.
To got an encrypted connection locally and remotely I created two duckdns addresses.

Homeassistant.duckdns.org
Homeassistant-local.duckdns.org

Now the Addon sets both urls to the external IP address. The solution I’m using now is to enable the addon a few minutes a day with an automation. And then set the local url with an rest command.
Enabling a feature to set the ip address per domain would make this a lot simpler.
It is fully supported in the app. Which has an option to use two urls.
And unlike the ‘NGINX Home Assistant SSL proxy’, the local connection is encrypted.

Why do you need encrypted traffic locally?