IPv6 - Address Types & Formats - Tutorialspoint
In the Internet Protocol Version 6 (IPv6), the address block fe80:: / 10 has been reserved for link-local unicast addressing. Of the 64 bits of a link-local addresses' network component, the most significant 10 bits (1111111010) correspond to the IANA-reserved "global routing prefix" for link-local addresses, while the "subnet ID" (the remaining 54 bits) is zero. Apr 14, 2020 · The purpose of this document is to provide a better understanding of IPv6 Link-local address in a network. A link-local address is an IPv6 unicast address that can be automatically configured on any interface using the link-local prefix FE80::/10 (1111 1110 10) and the interface identifier in the modified EUI-64 format. These addresses refer only to a particular physical link and are used for This address is selected with the prefix fe80:: / 64. In IPv4, typical "configuration protocols" include DHCP or PPP. Although DHCPv6 exists, IPv6 hosts normally use the Neighbor Discovery Protocol to create a globally routable unicast address: the host sends router solicitation requests and an IPv6 router responds with a prefix assignment. Jun 15, 2020 · Hello John, the FE80::/10 are the link local addresses. It is correct that you don't see them in the routing table: as explained in a previous thread actually it is a single IPv6 /64 subnet using eui-64 format what you get. I would presume that fe80::/64 is used because systems then run stateless address autoconfiguration (SLAAC) in that /64. Leaving the rest of the /10 available for statically assigned link-local addresses and netblocks. Sep 03, 2013 · inet6 fe80::2000:aff:fea7:f7c/64 scope link You can filter out the words on either side of the big address. The word at the start of the line - inet6 - is a label. Aug 09, 2017 · If you assign the link-local address FE80::1 on each of its interfaces and if that link-local address is unique on each of those LAN segments, then this becomes the default gateway for the hosts on those LANs. Therefore, each host, no matter on which LAN, will see FE80::1 as the next-hop IPv6 address for the default route in its routing table.
The form below does the conversion for you (both ways); Start Link-local address with 'fe80::'. Make sure you don't cut-and-paste spaces or tabs.
The above IPv6 Link local address we got from combining FE80::/64 prefix and MAC Address part can be further simplified as FE80::C800:EFF:FE74:8.. Note that I had noticed by default some Microsoft Operating Systems are not following the above method for auto generating the IPv6 Link Local addresses (for network security).
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Client gets an fe80 address as it's router (gateway?) address