Run Server Behind Domain?

Is it possible to run a server behind an A record (like play.example.net) and still have it listed on the ingame server list?

I would really really want to do this to help mitigate DDoS attacks that are causing my server issues right now. I want to use a domain name to route traffic through CloudFlare to help with the problem.

This was discussed in an earlier thread and I think they discovered it was not possible.

http://www.facepunch.com/showthread.php?t=1345531

So I just bought a VPS from RamNode, and they offer a DDoS filtered IP for a little extra, which I bought. How do I force my server to broadcast this IP?