[luv-main] DDNS Server [Scanned]

Hi All, I'm looking for a DDNS package that I can setup on a CentOS 5 server for potentially thousands of devices deployed at thousands of sites world wide. I have had a quick look at Bind9, which I think may buckle under this load if deployed by itself. I have also looked gnudip, but would like some feedback on how easy it is to setup and maintain, also any other packages people have used. TIA, Chris -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.