Hi @Jason_Oxford,
Unfortunately, Starlink is among the service providers with an implementation of IPv6 or dual-stack lite that, currently, does not allow for either automatic or manual configuration of port forwarding. Please see our tracking thread for Starlink users here: Note for Starlink Customers. There are workarounds available, notably Tailscale or many popular VPNs, in our #tinkering section.
However, since you’ve expressed an interest in #early-access, please note that we are actively testing IPv6 compatibility. If you choose to download the Test builds from our Early Access program knowledge base, then we would love to hear your observations.
We’re compiling the results of IPv6 compatibility testing here: Testing IPv6 support in Roon (for users locked out of ARC due to ISP reliance on IPv6 or CGNAT)