I have been trying to connect my mac (10.13) to my PC (windows 10) via ethernet so i can use a screen-sharing software (teamViewer). there seem to be incompatibility issues when connecting them directly but i have had success by connecting them both to an old wifi router. problem is that windows tries to connect to the internet through this now(which is not connected to a phone line) instead of its own wireless card. on the mac i was able to change the order of my network connections so that the wireless one was used for internet. is there some way i can do this so that the PC no longer tries to connect to the internet over ethernet and instead resorts back to the wireless connection? thanks.