Keith,
sort of. MPLS with globally-scoped tags, and a database of
[course] (think subnet sized) identifer to locator mappings that is
distributed via BGP. border routers look at the destination host
identifier, find the set of locators that correspond to it, and pick
the best locator given current routing conditions.
Haha. Check out some stuff Professor Dave Cheriton did at
http://www-dsg.stanford.edu/triad/
It smells remarkably like pathalias to me ;-)
Eliot
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