IPv6 link local address

From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Dec 03 2004 - 09:33:36 GMT-3

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Hi guys,

Since ipv6 automatically creates a link local address for every interface
configured with a unicast ipv6 address, why would anyone want to use the
link-local option on the following command?

int e0/0
ipv6 address <ipv6-addr> </length | link-local>

Also, what ipv6 addresses are allowed when the link-local option is used?

In other words, does the ip v6 address have to start with FE80::/10 or can any
allowed ipv6 unicast address be used and then ipv6 will automatically
construct a legal link-local address from the unicast address?

Thanks, Tim

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