Openvpn and IPv6 server

[SayMyName]

Hi Everybody

I have couple of vpn servers over WAN and now i'm trying to set new link between hosts via IPv6 (proof-of-concept). Remote box is Ubuntu with ovpn 2.2 with patches (jjo,payload,ipv6 etc.) and it resolvs host ipv6 name form client side, bu from server side (Pfsense development Beta 2.1) doesn't. So, i can't start server  >:(

RESOLVE: Cannot resolve host address: 2001:470:xx:xxxx::2: [HOST_NOT_FOUND] The specified host is unknown

openvpn[11800]: OpenVPN 2.2.0 i386-portbld-freebsd8.3 [SSL] [LZO2] [eurephia] [MH] [PF_INET6] [IPv6 payload 20110424-2 (2.2RC2)] built on Oct 26 2012

added into config but this doesn't help

proto-force tcp6-server

bind over ipv6 tunnel

local 2001:470:xx:xxxx::2

Can anyone give me a clue to manage it ?

Thank you.