Mark, > Mark Smith wrote: > a) Is IPv4 going to be formally deprecated when IPv6 is good > enough? If so, are the related IPv4 NAT RFCs also going to be > deprecated at that time ?
IMHO it's not a matter of being good enough, it's a matter of how many IPv4 hosts are still up. The IETF deprecating IPv4 would not achieve a lot; there still are people that use an Apple II and even some that are writing software and design hardware for it. There will be millions of diehard IPv4 users for a long while. It's a matter when vendors become to remove IPv4 from stacks, stop supporting IPv4, and when operators begin to provide IPv6-only service. In my wildest dreams, 10 years at least; possibly 20 depending on how good the projections in terms of IPv4 exhaustion are. > b) Is IPv6 good enough yet? Not for most. As long as there is no killer app and as long as IPv4 addresses are available, the investments to move to IPv6 are often not worth what it brings. One of the troubles is that v6 does not even do what v4 does: No private addresses. No PI addresses. No multihoming. The other trouble is that there is no way to do without IPv4 as of today. In the enterprise, if someone that implements IPv6 today could plan on IPv4 removal within two or three years, that would be considered, but operating dual-stack for 10 or 20 years when IPv4 provides all necessary functions is a waste of money. Keep in mind: peer-to-peer applications from each desktop to every possible host on the Internet is not the highest priority of enterprises; it actually is heavily filtered and firewalled both ingress and egress. As far as the consumer goes, most on-line gaming and p2p now works across NAT and so does SIP I hear (with STUN). The only way the consumer is going to accept IPv6 is when it does not know it's there, which we are not anywhere close to. Michel. -------------------------------------------------------------------- IETF IPv6 working group mailing list [EMAIL PROTECTED] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
