Following long discussions, a lot of emails exchanged and rejected drafts about NAT66, the IETF finally approved Network Prefix Translation or NPTv6 in RFC6296!
The NAT66 IETF Mail Archive can be found there:
NPTv6 proposes a lightweight stateless NAT solution that only translates the network prefix and not the full IPv6 address. This is a one to translation that requires no state on the routers and preserves the end-to-end reachability at the network layer.
NPTv6 (RFC6296) introduction clearly states that the IETF does not approve any Network Address Translation technology for IPv6. It provides many warning about the consequences of using Network Prefix Translation (more about the consequences of using NAT in RFC2993) and gives a reference to a document that explains all the IPv6 answers (RFC4864) to get the benefits people are looking for using NAT (RFC5902) without it!
So why was NPTv6 finally approved?
The arguments for NPTv6 are…
Read the rest of this entry »