Re: IPv6 fc00::/7 — Unique local addresses

Fri Oct 22 22:42:41 UTC 2010

>>> 
>> Actually, it's not pointless at all. The RA system assumes that all routers
>> capable of announcing RAs are default routers and that virtually all routers
>> are created equal (yes, you have high/medium/low, but, really, since you
>> have to use high for everything in any reasonable deployment...)
>> 
> 
> No it doesn't. You can set the router lifetime to zero, which indicates
> to the end-node that the RA isn't announcing a default router. In this
> case, it may be announcing M/O bit, prefix or other parameters.
> 
DHCPv6 can selectively give different information to different hosts
on the same wire segment.

RA cannot.

>> There are real environments where it's desirable to have a way to tell
>> different clients on a network to use different default gateways or
>> default gateway sets.
>> 
>> Owen
>> 