The changes I’m suggesting is in Windows, under the properties for the Network Adapter, you would uncheck the check box. Nothing to do with your Router. You would just disable it for both the Server and the Surface.
It appears from what you’ve described and the photo that you’ve posted that you’re tinkering with a mobile Roon solution for your vehicle.
We’re totally cool with our subscribers experimenting with Roon in order to achieve use scenarios that are outside its normal functionality. These efforts are best posted in this section so Support and Moderators are aware that what you’re attempting is outside of supported use.
I’m also happy to say that Roon is working on a mobile solution that will provide the capabilty that you’re exploring. Please stay tuned for more details.
Thank you for letting us know. This is a rare known issue we’ve recently identified and the team is diligently pursuing a permanent solution. If you take a look at the post @BlackJack linked above, the team has listed out a workaround for accessing Settings via the “Manage Profiles” tab on your Remote devices in the meantime.
We’ll be reporting updates in the other thread, so I’d encourage you to stay tuned there in the meantime.