I'm not engaging in the topic of hole punching though? The topic is whether CG-NAT has drawbacks other than lack of port forwarding. As I've said many times, expecting P2P connectivity has never been viable. But you ignore that and keep talking about how hard hole punching is, as if it's indispensable. What makes it so indispensable? Why is it so critical?
> Hole punching, in the context of NAT, is a technique where you establish peer-to-peer connection between hosts behind a NAT.
Good, that confirms I was never talking about that. I even explicitly clarified I was not talking about that (though you may have loaded my comment before that edit.)
> It does not matter which protocol you use, UDP or TCP or chuckles SCTP. If you want to establish P2P connection, you must hole punch.
You don't need to establish P2P connection so I don't see why that's such a problem. Again, it has never been safe to assume P2P connection is possible. Period. It is merely a progressive enhancement.
