IPv6 over IPv4

[jomimota]

Hi,

I have a Pfsense Wireguard client that connect's to my VPS Ubuntu Wireguard Server.
Since I don't have IPv6 from my ISP on Pfsense 3100 Box site, I have to connect via Ipv4.
The Ipv4 tunnel works fine and I can connect (ping) the both sites. The Ipv6 is not working (established) and I can't ping.
I tested the same configuration, with a windows 10 as client and all works fine (ipv4 and ipv6).

Server config (Ubuntu VPS):

[Interface]
Address = 10.9.0.1/24,fd08:fd88:8888:1009::1/64
ListenPort = 51820
PrivateKey = xxxxxxxxx

[Peer]
PublicKey = xxxxxxxxx
AllowedIPs = 10.9.0.2/32,fd08:fd88:8888:1009::/64
PresharedKey = xxxxxxxxx

Client config (Pfsense 3100):

[Interface]
PrivateKey = xxxxxxxxx
ListenPort = 51820
Address = 10.9.0.2/24, fd88:fd88:8888:1009::2/64

[Peer]
PublicKey = xxxxxxxxxxx
PresharedKey = xxxxxxxxx
AllowedIPs = 0.0.0.0/0, ::/0
Endpoint = ipv4:51820

Any help, please?

Thanks in Advance.

Regards.

Jorge Mota