TLDR: Hostname resolution should explicitly use an external DNS provider

1. Is this urgent: No
2. DNS provider(s) you use: No-IP
3. Program version: Running version latest built on 2022-11-03T09:49:13Z (commit d8de9d2)
4. What are you using to run the container: Unraid docker app
5. Extra information:

My server's default DNS resolver is my router, and in my router's configuration I have the domain used here overridden to return the internal IP. This applies only inside the local network, so the domain when accessed externally points to my external IP, as is governed by No-IP.
This means that DNS resolution of the domain name using the default DNS server, eg. 192.168.0.1 (the gateway) will never return the correct IP. To resolve the domain, any external DNS server should be used, like 1.1.1.1 or something else.
This is confusing ddns-updater and causing the domain to never match the external IP and it is always updating it, every cooldown.
If ddns-updater could be configured to specifically use an external DNS server, such as google or cloudflare or quad9 to resolve the domain name, this would return the correct response.

Logs:

INFO IPv4 address of <domain> is <internal IP> and your IPv4 address is <external ip>

Configuration file:

{
  "settings": [
    {
      "provider": "noip",
      "domain": "<redacted>",
      "host": "@",
      "username": "<redacted>",
      "password": "<redacted>",
      "ip_version": "ipv4",
      "provider_ip": true
    }
  ]
}

Host OS: Unraid 6.11.1