Please describe the feature you'd like to see added.

I'd like to see the ability to specify that only V2 protocol connections are allowed.

Is your feature related to a problem, if so please describe it.

No response

Describe the solution you'd like

Perhaps a setting like listenonly=v2

Describe any alternatives you've considered

No response

Please leave any additional context

This would be extremely helpful for those who depend on V2 for confirming a connection is a "bonafide" node.