Revision history [back]

See the Wiki page info on Monitor Mode capturing for macOS.

Some newer machines, running macOS Mojave or later, do not support remaining associated with a Wi-Fi network while running in monitor mode. If you try to capture in monitor mode, without disassociating from your Wi-Fi network first, the adapter won't go into monitor mode, and no traffic will be captured. You must disassociate from your network first.