Drag and drop the characteristic on the left to the corresponding IPv6 address type on the right. <DragDrop items={["counterpart of private IPv4 addresses","never used as a source address","provides one-to-many communications","may be used by multiple organizations at the same time"]} slots={[{"answer":"counterpart of private IPv4 addresses","id":"s1","group":"Unique Local"},{"answer":"may be used by multiple organizations at the same time","id":"s2","group":"Unique Local"},{"answer":"never used as a source address","id":"s3","group":"Multicast"},{"answer":"provides one-to-many communications","id":"s4","group":"Multicast"}]} explanation={"Unique local IPv6 addresses are the IPv6 equivalent of private IPv4 addresses for internal/local use, so multiple organizations can use them at the same time. IPv6 multicast is used for one-to-many delivery, and multicast addresses are not valid as source addresses. RFC 4291 defines multicast as delivery to multiple interfaces and states that multicast addresses must not be used as source addresses.\n\n**Learn more:** [RFC 4291 - IP Version 6 Addressing Architecture](https://datatracker.ietf.org/doc/html/rfc4291) · [Configuring IPv6 - Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide](https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/nx-os/unicast/configuration/guide/b-7k-Cisco-Nexus-7000-Series-NX-OS-Unicast-Routing-Configuration-Guide-Release/n7k_unicast_config_ipv6.pdf)"} reuse={false} />