Company XYZ has a new network based on IPv6. Some of the subnets that they are planning to use will be confidential and need an addressing scheme that confines them to the local campus network. Which

'Local addresses' is not a formally defined IPv6 address type in RFC 4291 or related standards and does not map to any specific prefix or scope.

'Private addresses' is an IPv4 RFC 1918 term and is not a recognized IPv6 address category; the correct IPv6 equivalent is 'unique local addresses'.

Link-local addresses (FE80::/10) are scoped to a single network link and cannot be routed between subnets, making them unsuitable for campus-wide confidential subnets that need inter-subnet reachability.

Unique local addresses use the FC00::/7 prefix range and are specifically designed to be globally unique within an organization but non-routable on the public internet, making them ideal for confidential subnets that must remain within the campus network. Unlike link-local addresses, they span multiple subnets and support routing within a site or set of sites under a single administrative domain.