Hello, I think you are missing part of the point of the utility - Start Process action. As well as using it to start an application, you can use it to do any command line command. So in this instance you should be using it to perform ipconfig rather than using it to start a new command line window.
If you use Start Process and in the application parameter pass in ipconfig and in the arguments parameter pass through parameters to divert output to a text file - for example ""> C:\Temp\Output.txt"" , you will end up with a text file containing the IPConfig output. You can then use other utility objects to read in a text file into a data item.