Gnome Remote Desktop Server Configuration

My query relates to setting up gnome-remote-desktop server so it can be used over an ssh tunnel. I want to be able to set the Networks interface to localhost rather than the LAN interface. In short it does not appear to be possible and I wondered if I found a bug?

Many thanks Greg

Package Detail:

usr@mc:~$ dpkg -l gnome-remote-desktop
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                 Version        Architecture Description
ii  gnome-remote-desktop 0.1.9-5+zorin1 amd64        Remote desktop daemon for GNOME using PipeWire

Linux Version:

user@mc:~$ hostnamectl
   Static hostname: ........
         Icon name: computer-desktop
           Chassis: desktop
        Machine ID: ................................
           Boot ID: ................................
  Operating System: Zorin OS 16
            Kernel: Linux 5.11.0-43-generic
      Architecture: x86-64

Gnome Version:

user@sh:~$ gnome-shell --version
GNOME Shell 3.38.4


user@mc:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Zorin
Description:	Zorin OS 16
Release:	16
Codename:	focal

After some investigation and testing it appears impossible to select an interface other than the one it defaults to. I set up my hp Z800 second Ethernet so it connected and the UI fails to allow me to choose it. I tried to set-up a virtual network using Zerotier. I made a successful connection but again the remote desktop UI will not allow me to select it.

Is there a config file I can edit, a way forward because this now KINDA SUCKS.

Thanks in anticipation.