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FAQ - Why Does a PC Obtain Multiple IPv6 Addresses

Publication Date:  2013-09-25 Views:  105 Downloads:  0
Issue Description
Why does a PC obtain multiple IPv6 addresses from a directly connected router?
Handling Process
Root Cause

On the PC:

IP-Address . . . . . . . . . . . . : XXXX::4d8e:9b8d:c7ae:4ced
IP-Address . . . . . . . . . . . . : XXXX::248:54ff:fe6c:5102
IP-Address . . . . . . . . . . . . : fe80::248:54ff:fe6c:5102%8

The first IP address is an globally unique IPv6 address that the PC obtains from the router.

The second IP address is an address that the PC forms based on the IPv6 address obtained from the router and its MAC address, enhancing the security. This address is used for external communication.

The third IP address ia a link-local address. The link-local address is used for the communication between link-local nodes in neighbor discovery and in the stateless auto-configuration process. Packets that use the link-local address as the source or destination address are not forwarded to other links.