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Re: Newbie Question about addressing impacts
Ideally, in an Internet architecture that we don't have today, there
would be N prefixes, one per ISP. However, the host
portion of the locator would be a constant regardless of prefix. The
IGP need not know about the external prefixes, so there's
no issue there.
But this implies modifying IGPs, right?
Not seriously. You would be modifying them to carry around a constant
local portion of the address and ignore the "global"
prefix. Simply picking a single constant prefix for use internally