Hello.

Does Mikrotik support forwarding IPv6 through OpenVPN tunnel established over IPv4?

I managed to set up a tunnel, but only IPv4 addressing seems to work and I want to know if I'm doing something wrong or is it unsupported.

Thanks.

It works in ethernet mode. There's no direct support for it, but since the adapter is in L2 mode, it will happily taky anything you'll give it, including IPv6.