We installed our first Hyper-V server last Monday, and everything went pretty well. The first virtual machine was the main company server SERVER1, and this was running AD, DHCP, DNS. But I did have an issue during the setup for the client workstations. I was not able to connect some of them to the domain. When I tried to ping the virtual machines, only one of the servers was being resolved (to it's FE80 IPv6 address) and the others would not resolve at all. I disabled IPv6 on these clients and immediately they were able to ping all of the virtual machines. I thought IPv6 was meant to work alongside IPv4 when they were both installed by default, not interfere with IPv4?
So my question is: IPv6 will not be mandatory in our country for a long time yet I would think, so am I better off just disabling IPv6 on all clients and servers to avoid such issues in the future.