Automatic Private IP Addressing (APIPA) is Microsoft’s terminology for address autoconfiguration in the Windows 98, ME, 2000 and XP OSs. APIPA allows a local area network (LAN) computer to give itself a unique IP address when Dynamic Host Configuration Protocol (DHCP) is unavailable. APIPA is sometimes known as auto-IP.

A link-local address would be added using something like. ip address add dev eth4 scope link fe80::21b:21ff:febb:5db0/64 Did you try that? If your problem is that you don't know what exact address you should use as the link-local address: These addresses are typically derived from the hardware (MAC) address of the interface. These addresses allow link layer address resolution via Neighbor Discovery Protocol (NDP) on the link without disturbing all nodes on the local network. A host is required to join a solicited-node multicast group for each of its configured unicast or anycast addresses. In IOS, the assumption is that the link-local address is always constructed using Modified EUI-64 - and if it is configured manually, then it is assumed that the last 64 bits of the link-local address already contain the final Modified EUI-64 value. Therefore, if you later ask the router to configure its global prefix on the same interface Sep 14, 2012 · Because the link-local prefix is used on every interface without any subnetting (64-bits of prefix, 64-bits of node, 128-bits of address) your system is unable to tell out which interface a packet destined to a link-local IPv6 address is supposed to be sent. The solution to the problem is you.

Link-local addresses are used for communication between two hosts (which are there on the same link) when no other IP address is specified. In simple words, at the time of booting up, OS tries to configure an address on its interface through various methods like -

Your link-local address is just for your local area network. Consider it the equivalent of a or address. They are not routable, and can be used for internal communications, so that if your world-routable prefix changes, you don't have to update all your IP references to internal IP addresses. Manually Configuring IPv6 Addresses on an Interface You can specify an IPv6 link-local address by using the link-local keyword: Router1# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)# ipv6 unicast-routing Router1(config)# interface FastEthernet0/0 Router1(config-if)# ipv6 address FE80::1 link-local Router1(config-if)# exit Router1(config)# end

link-local address definition: In Internet Protocol version 6 (IPv6), a type of unicast address intended for local use, only. A link-local address is similar to an IPv4 private IP address, as it is not meant to be routed and not intended for use in a public domai

Convert MAC address to Link-local address or Link-local address to MAC address. The IPv6 Link-local address is derived form the MAC- or Ethernet hardware address in the following way; Mac address: XX:XX:XX:XX:XX:XX: IPv6 Link local address: fe80::xyxx:xxff:fexx:xxxx: Where y = X XOR 2. Furthermore 'ff:fe' is inserted and 'fe80::' prepended.