scope of solution..

[Bill Sommerfeld <sommerfeld@orchard.arlington.ma.us>]

one of Margaret Wasserman's notes talked about the solution coming
from either "the routing system" or "the hosts".

Since we're talking about *site* multihoming, there are (at least)
three scopes here:

 - the routing systems of the ISP's outside the site

 - the routing system within the site

 - the hosts within the site.

A scalable multihoming solution could involve some form of
coordination between the site's routers and the site's hosts..