OpenVPN communication thru IPv6

As the title, both OVPN server and OVPN client are working fine with IPv4 address. But I have no idea to get them talking with each other over IPv6 address, is that saying OVPN on Mikrotik devices today does not work thru IPv6??? My network is running normally, and IPIPv6 Tunnel, GRE6 Tunnel and EoIPv6 Tunnel are working properly.

My Router Model: RouterBOARD 962UiGS-5HacT2HnT
Version: 6.45.8

Like most things IPv6, Mikrotik does not fully support IPv6. Specifically, incoming IPv6 connections in the VPN servers for anything outside of IPSEC.