Is there a fundamental difference in these two "types" of multihoming? In the IPv4 world, I would argue that there is not--it's just that the site router has better knowledge with which to make an interface selection than does the host (listen to RIP?).Another place where one term, "multi-homing", has been used to cover two fairly different things are with so-called "site multi-homing" and "host multi-homing" - the latter being a single host with multiple physical interfaces.