Personal IPv6 exit IP as alternative to port forwarding

[CentralPivot 1]

With IPv6 allowing practically infinite IPs it should be possible to assign a dedicated IPv6 address to each connection, allowing incoming connections to any port to be forwarded. This would be a great way to circumvent the port forwarding restrictions on IPv4 that exist because multiple clients have to share the same exit IP, and I think would make for a nice optional feature.

[Tech Jedi Alex 1513]

But then, why even use a VPN for privacy reasons? IPv6 was specifically configured to be NATed to have a similar pseudonymic way of operation as with IPv4.
Also, this would mean that port forwarding will only work with v6, but half the ISPs in the world don't even rollout v6, and most VPN users simply disable v6 upon connecting. There'd be backlash with such a decision.

[CentralPivot 1]

11 hours ago, Tech Jedi Alex said:

But then, why even use a VPN for privacy reasons? IPv6 was specifically configured to be NATed to have a similar pseudonymic way of operation as with IPv4.

Privacy is not the only only reason to use a VPN. Also, while it would be possible to assert that traffic going to a specific IP is tunneled to the same end user, going through a VPN means you still don't know who that end person is or where they're located based on their IP. And since we're talking about incoming traffic, this kind of analysis is already possibly by also looking at the destination port of the incoming connection.

11 hours ago, Tech Jedi Alex said:

Also, this would mean that port forwarding will only work with v6, but half the ISPs in the world don't even rollout v6, and most VPN users simply disable v6 upon connecting. There'd be backlash with such a decision.

This wouldn't affect IPv4 port forwarding. All IPv4 connections would still use a shared IPv4 exit address. It wouldn't even affect port forwarding for IPv6 users that don't enable this feature. This would just be an option to get a dedicated exit IP that would forward all traffic statelessly. Traffic going to the shared exit IPs would go through the same port forwarding translations it already does.