Michel Py wrote: > Look what you have done: not only we have more NATv4 than ever, but now > we also have NAT46, NAT64, NAT464...whatever and all of these with heavy > ALG layers to make it more palatable. FYI, with end to end NATv4, all the applications, including PORT command of FTP, just work without any ALG layers at all. End to end NAT does not even have TLG layers of transport checksum recalculations, and port translations. For the end to end transparent NAT, NAT boxes can do nothing other than the simplest address translation and rest of the job must be done by end systems. Masataka Ohta _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf