Hello MikroTik support team, forum,
is IPv6 protocol supported to go through OpenVPN tunnel in OpenVPN implementation in MikroTik?
I have the scenarion:
routerA -----VPN----- routerB
If VPN is created via SSTP, both of routers automatically get local IPv6 IP addresses (fe80::xx/64) on tunnel interfaces. When I configure IPv6 addresses on both sides of VPN tunnel, IPv6 traffic is going through tunnel.
If VPN tunnel is created via OVPN, both of routers do not get local IPv6 IP address on tunnel interfaces and also after configuration of IPv6 addresses on both sides of VPN tunnel the IPv6 traffic is not passing through tunnel.
ROS was used 5.5, for testing I used ping VPN interface on 2nd router. OVPN/SSTP tunnel is connected via IPv4 IP addresses, I need to transfer IPv6 over this tunnel. I need this scenario to get IPv6 connectivity to routerB, using of Internet tunnel broker is not possible on routerB. If is there another solution how to transfer IPv6 connectivity to routerB via IPv4 from routerA, please let me know 
Thank you