I have recently noticed an issue with my Airport Extreme base station. I have a working internet connection through the base station but the green light has been replaced by a flashing orange light. Also, when I boot my Mac, the Airport Utility starts up and tells me that my base station has no IP address. I don't understand why this just started happening now?? Even though it says that I have no IP address, my internet connection to the Mac still works. How can I fix this issue?