We should test all these IPv6 configuration options:
- static IPv6 with delegated prefix
- DHCPv6 without delegated prefix
- DHCPv6 with delegated prefix
IPv4 support is base line and is expected to be done by just creating NAT layer to emulate some ISP network. In IPv4 network this is expected and normal. On the other hand the question is how should we test IPv6 network. There is of course possibility that we use practically discouraged IPv6 NAT. This has few advantages such as that it is pretty much same solution as for IPv4 and also that there would probably be lover requirements on host computer (single IPv6 address would be enough, no need to have delegated range). The second option is clean but kind of problematic where PC is going to have delegated range and this is going to be used to delegate additional range to router as well as address of the router and WAN container.