And if you make your device forget the network, it will also forget the private address it used with that network, unless it has been less than 2 weeks since the last time it was made to forget that network. So, for example, a typical MAC address is formatted as 00-11-22-33-44-55. Starting with iOS 15, iPadOS 15, and watchOS 8, if your device hasn’t joined the network in 6 weeks, it uses a different private address the next time it connects to that network. A Media Access Control (MAC) address is typically presented in six sets of two digits or characters, which are then separated by dashes or colons.If you erase all content and settings or reset network settings on the device, your device uses a different private address the next time it connects to that network.In some cases, your device will change its private Wi-Fi address:

This unique MAC address is your device's private Wi-Fi address, which it uses for that network only. Starting with iOS 14, iPadOS 14, and watchOS 7, your device improves privacy by using a different MAC address for each Wi-Fi network. This allows a kind of user tracking or profiling, and it applies to all devices on all Wi-Fi networks. Operation ShadowHammer targeted the ASUS computers software update tool to inject a backdoor. If the device always uses the same Wi-Fi MAC address across all networks, network operators and other network observers can more easily relate that address to the device's network activity and location over time. You may be a victim for ShadowHammer hack, here is the complete list of the MAC Address, tool to check for infection and the update to resolve the issues. To communicate with a Wi-Fi network, a device must identify itself to the network using a unique network address called a Media Access Control (MAC) address.

Asus mac address