Within IPv6 research society, we have used the NAT-PT term for years. For my concerned, there is no confusion at all. However, it may be confusion for the others outside IPv6 research society. They may use the term in different way, such as translation between others protocol rather than IPv4/IPv6. In that kind of consideration, NAT64 or NAT-64PT would be clear enough. By the way, 64 should means between v6 and v4 bi-directions rather than only v6 -> v4. Cheers, Dr. Sheng JIANG IP Research Department, Networking Research Department, Network Product Line, Huawei Technologies Co. Ltd. *-----Original Message----- *From: Keith Moore [mailto:moore@xxxxxxxxxx] *Sent: Thursday, November 15, 2007 4:31 AM *To: RJ Atkinson *Cc: ietf@xxxxxxxx *Subject: Re: terminology proposal: NAT+PT * *As far as I'm concerned, NAT-PT is defined in RFC 2766, and describes a *particular way of translating between IPv4 and IPv6. If people are *using NAT-PT in a different way, that's unfortunate. But I don't *consider it a major problem because NAT-PT really isn't usable anyway, *for two sets of reasons: (1) for any kind of NAT approach to be *generally applicable, applications need to be explicitly aware of NAT; *have explicit awareness of, and control over, bindings in the NAT; and *be able to distinguish one addressing realm from another and know which *addresses are in which realms. NAT-PT doesn't do the first two, and *it's arguable that it doesn't do the third. (2) lying about DNS results, *which NAT-PT does, is always a Bad Idea and should be strongly discouraged. * *If someone wants to define a different mechanism to translate between *IPv4 and IPv6, it needs a different name to avoid confusion with *NAT-PT. I don't like NAT+PT as a name, because it's too easily confused *with NAT-PT. (I don't like DVD-RW and DVD+RW either, but I expect that *was a case of deliberately trying to cause confusion in the marketplace.) * *Keith *> NAT, NAPT, and NAT-PT have been used for some while now to refer *> to various sorts of address/port translation within an IPv4-only *> network. *> *> Recently, there has been some discussion of network address with *> IPv6::IPv4 protocol translation. Some have referred to that as *> NAT-PT also, which can be confusing to some. *> *> I'd like to suggest that when talking about the concept of *> translating protocol versions (IPv6 <-> IPv4) in addition *> to, or instead of, altering port number or IP address, we *> use the short-hand notation "NAT+PT". *> *> Cheers, *> *> Ran *> *> (PS: Perhaps I've been burning too many DVDs lately. :-) *> *> _______________________________________________ *> Ietf mailing list *> Ietf@xxxxxxxx *> https://www1.ietf.org/mailman/listinfo/ietf * *_______________________________________________ *Ietf mailing list *Ietf@xxxxxxxx *https://www1.ietf.org/mailman/listinfo/ietf _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf