Hello, I have received a /64 subnet and I have setup a windows server to terminate the static 6in4 tunnel. My clients can successfully send packets to the encapsulating windows machine, which forwards them to the IPv6 backbone and I successfully recieve replies that are forwarded back to the to the clients. My network is configured like: clients -> win server (router) -> 6in4 tunnel -> internet. However, my question is as follows. When I inspect the neighbor cache on the static sixxs interface (v6v4tunnel) at the win server machine I see a separate ND entry for every IPv6 destination on the internet to which I have recently connected. Why is this happening? I have tried to configure my network so that the win server has a default route ::/0 with gateway set to the inner IPv6 IP of the remote tunnel endpoint. I expected the neighbor cache at the most only contain the configured gateway. If needed I can provide IP addresses, configurations and neighbor cache printouts. A related question: I have seen that people who have received native IPv6 access from their ISP often needs to make trix with ND proxying. For example this guy: http://www.ipsidixit.net/2010/03/24/239/ Why is proxy ND needed? Isn't that a result of the ISP not configuring a correct nexthop for the handed out subnet? Thanks