Hello all,

I will try my best to explain. I setup a test IPV6 Windows 2008 DHCP network. I have one DHCP server and 2 DNS servers and a domain called ipv6.com. If I add a machine to the network I see that it picks up an address from my DHCP server. It will show it in client in the DHCP address leases section. When I try to add a machine to the domain it fails. If I assign a static one I'm able to add it to domain. The static one client can ping other machines in the network but the one with a dhcp address can't.

I think it's possible that we didn't setup DHCP role properly. Out network doesn't have a router, the network is setup through VMware with a VLAN switch. Should the DHCP setup be stateless or stateful mode? Basically, disable DHCPv6 Stateless Mode? I think I read someone at one point where if you enable stateless mode then your clients can ping anything because it's meant for IPV6 DHCP routers.  

This is an isolated network and the traffic doesn't need to be router to the outside.

I have exact same issue. What boggles me if I Static ASSIGN a specific IP i can ping DC's and other things on network,  IF i use DHCP to assign the Exact same IP but in a reservation i cannot ping anything.

I setup dozen scopes and excluded all but last octet still can not get it working.  has to be static to function;