On Mar 4, 2011, at 9:58 AM, Christian Huitema wrote: > There are however two big limitations to solutions like STUN, TURN or ICE. > First, it is entirely possible to engineer a middle-box that breaks them, by > making the mappings hard to discover. Second, if the mappings are volatile > and short lived, the end to end systems are forced into a pattern of frequent > polling which drains the batteries of mobile devices. If the NPT spec > addresses these limitations, we may well have a deal.
NPTv6 provides a stable mapping as long as the internal address remains constant - it has an internal prefix and an external prefix, and does a reproducible mapping between the two. There is a question with privacy addressing - if the host interface changes its address, and especially if it changes it frequently, the peer will need to keep track of that, and there is a question of how DNS knows what the current address is. But the network isn't changing the address, the host is. _______________________________________________ nat66 mailing list [email protected] https://www.ietf.org/mailman/listinfo/nat66
