Link-local IPv6 addresses have a smaller scope as to how far they can travel: only within a network segment that a host is connected to. Routers will not forward packets destined to a link-local address to other links. A link-local IPv6 address must be assigned to every network interface on which the IPv6 protocol is enabled. A host can automatically derive its own link local IP address or the address can be manually configured.
Link-local addresses have a prefix of FE80::/10. They are mostly used for auto-address configuration and neighbour discovery.
Here is a graphical representation of a link local IPv6 address:
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