[c-nsp] IPV6 in general was Re: Large networks

[Phil Mayers]

Grzegorz Janoszka wrote:
> Phil Mayers wrote:
>> Hmm. So in theory you can configure a router to advertise 
>> fe80:something::/64 as the link prefix?
>>
>> Ok; why would you want to? Link-local prefixes are still link-local, it 
>> just requires an extra link of config to make bits 11-64 the same as the 
>> unicast prefix.
> 
> You cannot have the same link-local IP's on different ifaces, can you?

Yes you can; in fact, it's the norm. This is the reason behind things like:

ping fe80::something%eth0

...or whatever your OS syntax is