Here's a solution based on metarouter and openwrt (freely inspired by some other tutorials on the net):

http://www.fievel.be/doku.php?id=sixxs_ ... k_routeros

This article is not more available but you can find it in web.archive.org: https://web.archive.org/web/20141230220319/http://blog.one-it.de/ipv6-via-sixxs-using-mikrotik-and-openwrt I also wrote an updated tutorial of what I did based on this one: http://www.fievel.be/doku.php?id=sixxs_aiccu_tunnel_...

I took what I found on the net, and wrote a tutorial to what worked for me

http://www.fievel.be/doku.php?id=sixxs_ ... k_routeros

I can confirm that the issue with openvpn server with option "Require client certificate" not working anymore (bug found in 6.11) (http://forum.mikrotik.com/viewtopic.php?f=2&t=83203) is fixed in version 6.12 BUT you have to delete and re-import your certificates.

When is planned the next version ?

I have a problem with openvpn server. I tried a bit yesterday and It's the option "Require Client Certificate" which cause the trouble. I see in changelog a lot of improvements in certificate managing. Do I have to regenerate the certificates ? I use self-signed certificate created with op...