![convert mac address to link local convert mac address to link local](https://www.data-connect.com/images/2135_2124_2121_2135c.jpg)
OmniSecuR1#show interfaces gigabitEthernet 0/0 The MAC address of interface gigabitEthernet 0/0 is ca00.0e74.0008. Next, view the interface information of the same interface mentioned above using the IOS command " show interfaces gigabitEthernet 0/0". How this IPv6 Link Local address as FE80::C800:EFF:FE74:8 is auto generated by the router? Read below. The output shows the IPv6 Link Local address as FE80::C800:EFF:FE74:8, for interface gigabitEthernet 0/0. Hosts use stateless autoconfig for addresses. ND advertised default router preference is Medium ND router advertisements live for 1800 seconds ND router advertisements are sent every 200 seconds ND advertised retransmit interval is 0 (unspecified) ND advertised reachable time is 0 (unspecified) ND reachable time is 30000 milliseconds (using 26049) ND DAD is enabled, number of DAD attempts: 1 ICMP error messages limited to one every 100 milliseconds IPv6 is enabled, link-local address is FE80::C800:EFF:FE74:8
![convert mac address to link local convert mac address to link local](https://blog.pcrisk.com/images/stories/blog/2018/how-to-find-your-ip-address-mac-macbook/detailed-information-ip-address-mac.jpg)
GigabitEthernet0/0 is up, line protocol is up OmniSecuR1#show ipv6 interface gigabitEthernet 0/0 View the following output of show command "show ipv6 interface gigabitEthernet 0/0", in a Cisco router.
![convert mac address to link local convert mac address to link local](https://mrncciew.files.wordpress.com/2013/04/ipv6-04.png)
IPv6 Link Local addresses are auto-generated and many international technology leaders generate IPv6 Link Local addresses from MAC Address of the interface. The scope of an IPv6 Link Local address is the local link. IPv6 Link Local addresses are used by devices for communicating with other nodes on the same link. A link-local address is for use on a single link and should never be routed. Typically, getting an APIPA IPv4 address in an IPv4 network is because of some network error, but a Link local addresses are IPv6 addresses which can be used for local communication. Link-local addresses are auto-configured (or auto-generated plug-and-play) addresses (Stateless addresses) similar to IPv4 APIPA addresses (169.254.0.0/16). Link-local addresses cannot be routed to public networks and limited to the local network. The IPv6 addresses starting with FE in hexadecimals represent link local IPv6 addresses.