There have been a few interesting comments on this post, I encourage you to read them if you want to learn more about this mechanism. prepend the link-local prefix: fe80::5074:f2ff:feb1:a87fĪ converter to do the same operation in reverse is available here.Now for the tricky part - the calculation. First thing, you have to add some ff:fe in the middle: 5f:4e:3d:ff:fe:2c:1b:0a. Let’s say you have the following (hypothetical) MAC Address: 5f:4e:3d:2c:1b:0a. Well, it’s pretty easy if you know how to do it. replace first octet with newly calculated one: 5074:f2ff:feb1:a87f Please calculate the IPv6 link-local Address from the following MAC Address.Just fill in one of the fields and the second will update automatically. convert octet back to hexadecimal: 01010000 -> 50 Online converter from MAC address to IPv6 and from IPv6 to MAC address.convert the first octet from hexadecimal to binary: 52 -> 01010010.reformat to IPv6 notation 5274:f2ff:feb1:a87f.Here’s the conversion process step by step: This link-local IPv6 is infered from the NIC’s mac address.Ī mac address is 48 bits, an IPv6 address is 128 bits. Instead of getting an address via DHCP, a NIC will hop on the network with a link-local IPv6 address and with this will have to ability to do further configuration automatically (soliciting neighbors, router, et cetera). On the other hand, IPv6 (Internet Protocol version 6) addresses are used to identify and locate devices on a network, providing an extended address space compared to IPv4. Link-local IPv6 addresses are used as part of the IPv6 network auto-configuration process. MAC address (Media Access Control address) is a unique identifier assigned to network interfaces for communications on a physical network.
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