ARC Reverse Proxy Set Target Domain (IP Replacement)

I have a Traefik instance behind Cloudflare and multiple local security applications. I would much prefer to be able to create something like roon.my_domain.com and point ARC to that instead of opening an unnecessary hole in my home network by blindly forwarding all traffic on that port to my Roon Core machine.

Yes, there are ways around this but it wouldn’t be ideal. I would greatly appreciate if a way to specify a target domain was added to ARC to override/supplement the current default of targeting an IP.