I have a single dynamic IP. What I think I can do is sign up for an account at dyndns and get something like mydomain.dyndns.tld, set it to my ip (a router with nat). At my registrar for my real domain, set the dns servers to mydomain.dyndns.tld. I forward the port to the correct private IP. I can then use my own DNS servers and set them up how I wish. First of all, will this work? Second, how do I solve the problem of the DNS server being on a private IP? In other words, how do I update my DNS servers with my dynamic public IP when it is behind the NAT?