Apple added a new privacy setting in iOS 14, iPadOS 14, and watchOS 7 that periodically changes the MAC address your device uses with each Wi-Fi network. This randomized MAC address is your device's private Wi-Fi address for that network—until the next time it joins with a different address. Our network registration system that grants Internet access relies on the MAC address being the same. To avoid needing to re-register your device, you will need to turn off private addresses (or see below).