I'm attempting to run PPA on Azure but I only have one IP to work with, the public IP address. It's not possible to communicate between servers using the internal IP addresses as they are not necessarily on the same sub net. How can I get PPA and service nodes running on a single IP address per machine? An example of the error I get when setting up a service node is Failed to execute command 'cscript /Nologo http_download.js http://<private ip address>/tarballs/Win32Bin/support.cab'. Check logs in 'c:\POA_Deploy' at host '<public ip address>' for more details about the reasons of failure.