The Minecraft server port always connects to 25565 when connecting to a domain-linked server, for example;

IP: 1.1.1.1:32982

Domain: example.com

When the Minecraft server is attempted to connect to, it defaults to example.com:25565, ignoring the DNS settings set in the domain

I have attempted to use Vanilla 1.17, Fabric 1.17, OptiFine 1.17 and Lunar Client 1.17 and they all have the same issue.