>> A router might (and probably should) be hard-coded not to
>> forward link-local packets, as there is no reason to ever
>> forward them.
>>
>> However, a router that might ever need have multiple
>> interfaces in a single site can't be hard-coded not to
>> forward site-locals. Whether or not they will be forwarded is
>> the result of configuration.
>
>Actually, a router can forward link-locals between interfaces on the
>same link. In particular, a router can forward a packet with link-local
>dest and/or source back out the interface from which it arrived (and
>presumably generate a Redirect too).
>
>If you are implementing link-locals properly, it's really very little
>additional code to support site-locals. At least that's my experience.
could you comment on routing code? (RIPng, OSPFv3) i still think
it's way too tough to support multi-sited node.
itojun
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