How to set up a virtual network / NAT for libvirt?

[Peter Nabbefeld <peter.nabbefeld@xxxxxx>]

Hello,

I've been told that I cannot bridge multiple networks using WLAN (as WDS 
would not have been implemented correctly on all devices), but I've to 
use a virtual network, brobably with NAT, but I cannot find sufficient 
advice, neither in the arch wiki nor on the internet - probably just my 
search terms are incorrect, I don't know.

Could You give me advice, what I've to do to get internet access on my 
QEMU/Windows VM? Default networking does'nt work.

Kind regards
Peter