Hello,
I tried to setup an IPv6 network with private addresses (fc00::/64). From my computer I can ping the asg firewall using those addresses. My asg is connected to IPv6 through SIXXS tunnel broker. From the asg I can successfully ping ipv6.google.com using the tunnel.
To access the IPv6 internet from the internal IPv6 network I need to masquerade all packets coming from internal IPv6 to the asg side IPv6 address of the tunnel. But this does not work. When trying to setup masquerading with IPv6-only source network I get an error message. Same goes for SNAT using IPv6-only source networks.
Philipp