The IPv6 Link-Local Address

OSPFv3 uses the IPv6 link-local interface addresses as both the source and next-hop addresses. A single link-local address is supported per interface. IPv6 link-local addresses begin with FF80::/10. An IPv6 link-local address is autogenerated when you enable IPv6 on the interface, based upon the the MAC address associated with the interface. Use the ipv6 enable command to enable IPv6 on a non-routing IPv6 interface. Use the ipv6 forwarding command to enable IPv6 on a routing interface. Use the ipv6 address command link-local option to manually configure the IPv6 link-local address. When manually configuring a link-local address, if a link-local address already exists on the interface, a warning displays asking you if you wish to change it.

Enable the interface using the no shutdown command.