I need to find a router that can be configured to only serve up IPv6. My DLink DIR-655 is a sweet router and supports both, but I need a pure IPv6 environment for various reasons. What I was thinking is that I could simulate it by using nothing but Vista and removing the IPv4 stack, but that would require installing many copies of Vista. Any chance I could find a router that could be configured to only give out IPv6? I'm hoping I can find something cheap as well.