> > The problem is that there are two types of uses for local > > addresses: > > > > 1. To number systems/interfaces that are only accessible from withing > > the local network. > > > > 2. To have stable addresses for systems/interfaces regardless of > > intermittant external connectivity and renumbering.
There is at least one other potential use: 3. to number systems/interfaces that are attached to networks that don't have connectivity to the public internet Note that this is not the same as #1, since such networks can still talk with other networks, and some of the other networks might have public internet connectivity. Whether my #3 is just a more accurate way of expressing the intent behind #1, I cannot tell. (#1 could be interpreted as "to number systems/interfaces that are only intended to be accessible from within the local network", but that might or might not be what was intended.) > It's true that we *know* these addresses will be good for 1., and we > don't know whether they will be useful for all aspects of 2. So the > draft could indicate this. Actually I'm not sure that it's even reasonable to say this, at least given the way #1 is worded. Before we can really say that it's reasonable to assign local addresses to hosts that are only accessible on a local network (while allowing the possibility that other hosts on that local network have external connectivity) we need to understand how applications that perform address referrals will work. If those apps need to treat local addresses differently than global addresses, it might not be appropriate to assign local addresses to hosts attached to networks that have external connectivity, even if those hosts aren't intended to communicate externally, since that would affect the ability of applications on those hosts to interoperate with other hosts on the same network that did have external connectivity. Keith -------------------------------------------------------------------- IETF IPv6 working group mailing list [EMAIL PROTECTED] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
