UPnP protocols and name resolution produced different IP addresses for your server.
If your broadband router is configured to use a dynamic DNS (DDNS) service, you may experience name resolution problems with Windows Home Server. To work around this problem, disable DDNS on your router while you install the Windows Home Server Connector software. After you finish installing the Connector, you can enable DDNS again
This may also happen if you use DNS for name resolution on your network and your name query request was resolved by your Internet service provider's (ISP's) DNS server. Your ISP may have a computer with the same name as your home server. If you use a local DNS server for name resolution on your home network, ensure that you have a local domain for your home network and that there is an appropriate address record for your home server. Your home computers should be configured to use this DNS server for name resolution.