I have two ubuntu machines. One has a usb connected printer and works fine from the computer it is connected. I set up a remote printer on the second machine with a url of ipp://10.0.1.201/printers/remote_name_of_printer. Every time I attempt to print to it, I get "The printer is not responding". I also tried using url of ipp://10.0.1.201:631/printers/remote_name_of_printer and get the same.