The IPv6 unicast (one-to-one) address is a logical identifier (ID) of a single-host interface. With a unicast address, a single source sends to a single …
IPv6 Unicast Addresses – Internet Protocol Version 6 (IPv6) Design

The IPv6 unicast (one-to-one) address is a logical identifier (ID) of a single-host interface. With a unicast address, a single source sends to a single …
RFC 4193 defines the unique local address. Unique local addresses (ULAs) are designed for use in local networks and are not routable on the Internet. …