I have a Windows Server 2019 VM (HyperV) where I setup my first DC. I also setup DNS and DHCP on the server. After deploying these, the yellow warning icon appeared on the network icon in the bottom right corner, and it says "No internet access". Indeed, Internet access seems to be working normally. The only issue is the DNS sometimes unable to resolve certain random domains. It seems that unbinding IPv6 from the NIC almost solved this issue, but the warning icon and the No Internet message remains.