I’m migrating a bunch of clients, domain, web sites and a few resellers from my ISPConfig console v2 (running off an OpenSuSE) to a new separate box with ISPConfig v3 (running CentOS 6.5). Most of the environment is pretty much static except for one site which I can freeze for a weekend. I have to switch the whole environment using only one “external static IP” to the internet. I can recreate the new server client by client, site by site, etc in advance. I was thinking that I could just change my internal IP from one server to the other once I'm done, leaving only one server connected to the network at a time to avoid name server conflicts. This would imply that I would have to send the new web_x account info to each user prior to the move, unless I can force the numbers on the new box within ISPConfig 3. Is this the best I can do or is there some other approach that would be easier on everyone. Thanks, Guy