Virtuell Windows is loosing Standard Gateway after Seconds - Version 11.5.6 over macOS WLAN IF

[tinozander]

After using a new MAC with Catalina, my Windows 7 loses its default gateway after 30 seconds.

But only with WLAN bridge, the cable connection works.

I have no idea and need help.

[ColoradoMarmot]

A lot of enterprise WAP's will only grant a single IP address to a given MAC address.  If that's the case, switch to NAT.