Re: draft-ietf-nat-protocol-complications-02.txt

[Bill Manning]

% 
% Sean Doran <[EMAIL PROTECTED]> writes:
% 
% > Unfortunately, IPv6's current addressing architecture makes it very
% > difficult to do this sort of traditional multihoming if one is not
% > a TLA.
% 
% This is not true. IPv6's TLA scheme has as its primary goal placing an
% upper bound on the number of routing prefixes that are needed in the
% core. I.e., a backbone provider is only required to maintain routes
% for each individual TLA in order to have reachability to ALL
% destinations. Contrast that with today's IPv4 where the number of
% prefixes that need to be maintained in the DFZ in order to have global
% reachability is more-or-less unbounded, so some prefixes are not
% reachable from everywhere.
% 
% Thomas

and this is different from only carrying the 253 usable /8 prefixes in
IPv4 how? 

--bill