> It probably is, although the terms internal and external in this context
> remind me of the way "internal" and "external" are used to describe
> routes in an IGP. An IGP prefers its internal routes over equivalent
> external routes because it discovered them itself, verses just being
> told the external route and an arbitrary metric.
> 
> Here is an alternative analogy - you can choose your friends
> (organisations you communicate with by directly connecting with
> (logically or physically) and trading GUPI /48 prefixes), you can't
> choose you relatives (everybody else on the public Internet, for which
> you use global addresses).

offhand, I like calling them "friends" and "relatives" - to me it 
conveys the right intiutive sense of what is going on.   

Keith
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