> First, embed the "legacy" address space. What do you mean by that? > Second, have legacy-to-legacy connections use v4 on the wire. Just as IPv6 does? > Th

> First, embed the "legacy" address space. What do you mean by that? > Second, have legacy-to-legacy connections use v4 on the wire. Just as IPv6 does? > Third, strongly encourage existing user-maintained configuration (config file formats etc.) to remain perfectly valid as long as they don't use v6 addresses (or other v6 features.) Just as is the case with IPv6? > You are right, you'd still need a "legacy" address to connect to "true" v4 servers, but that address would be all you need Just as it is now? > while most operating systems, routers, client and server software could be, technically, all-v6 all-the-time by now. If they implemented the extensions ... just as if they implemented IPv6 by now?