Steve Deering;
Unfortunately, IPv6's current addressing architecture makes it very
difficult to do this sort of traditional multihoming if one is not
IPv6's larger address space is merely a necessary piece of an
Internet which will not run out of numbers.
Wow, we actually agree on something! (Though I could quibble over the
"merely".)
As you two seemingly have agreed, IPv6, as is, is not so useful
for scalable multihoming.
However, transition to IPv6 is important to solve multihoming
issues, because IPv6 routing space is not yet polluted by
unaggregated addresses.
Important pieces are documented in
<draft-ohta-e2e-multihoming-00.txt>
The Architecture of End to End Multihoming
just become available.
Masataka Ohta