What Is a Link Local Address?
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A link local address is an IPv4 or IPv6 address that is used for communication between two nodes on a single link (e.g., a network segment) without using a global router. Link local addresses are usually assigned by a network device, such as a router, and are not routable over the Internet. Link local addresses are designed for local-area network (LAN) communication and are usually in the range of 169.254.0.0/16 for IPv4 and fe80::/10 for IPv6.
A link local address is a special type of IPv4 address typically used for communication on a local area network (LAN). These addresses are assigned in the 169.254.0.0 network and are identified by the subnet mask 255.255.0.0. Link local addresses are designed to be used only within a single network where they cannot be routed to other networks, meaning they can only be used for communication between devices on the same small local network.