> So to restate - Keith, it sounds like you now agree, that with a
> reasonably small amount of additional complexity, apps can function in a
> network environment that has both globals & site-locals - subject to
> your condition about globals being available for apps that communicate
> off-site?

yes.  the trick is making that condition stick in practice.
I have my doubts.
 
> Certainly - if a node is going to run an application that communicates
> off-site then it needs a global address. I mostly agree with the second
> part - I would say any general-purpose node in any network which has an
> external connection should have a global address.
> 
> However I think we will have limited-function nodes, which run a fixed
> set of applications, and if those applications do not need globals then
> the node does not need a global address. 

I'm with you this far.

> I think the vendor of one of
> these devices should have the freedom to determine the device's "out of
> the box" configuration, based on expected usage patterns.

Here I strongly disagree.  It's simply not reasonable in general for
a vendor to make assumptions about the distribution of threats in 
a customer's network.  For the very limited case of home networks,
it might be reasonable, but I have stong doubts that either it's
reasonable to define a  'home network' or to have 'home network devices'
as a special class that for which it's declared okay to be insecure
out of the box.

Keith
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