JD> Get IPv6 Address Way: Get IPv6 prefix delegation
JD> IPv6 Address Assign Type: DHCPv6 Server
I see. But there's something fishy. Your PC's link-local address is fe80::f9e0:b9ff:6166:c8ef and I missed the point that the assumed modified EUI-64 doesn't start with 02 and the middle part isn't ff:fe. The same with your router's link-local address. An automatic link-local address should be based on the modified EUI-64 format of the MAC address. Of course you can configure it also manually. Another point is that the interface parts of the link-local address and the DHCPv6 assigned address are the same. I haven't seen that yet. Do the MAC addresses of your PC and router start with 00?