Does it not make more sense to connect Vero>receiver>TV so that you are not at the mercy of what audio formats may or may not be properly returned to the receiver by your television?
Also, as far as IP addresses in the logs, there is no concern with sharing addresses within your local network. They are likely the same addresses used by all of us within our private networks. Example, my lan addresses are all 192.168.1.x. But this is the purpose of our routers/modems, they firewall the rest of the world from being able to reach them.
Edit: I also think you should read the following section more carefully. It explains the limitations when using ARC.
https://discourse.osmc.tv/t/connecting-your-audio-setup-audio-settings/82441/8