On Monday, September 13, Apple made a slew of new software releases that contain critical security patches across multiple platforms, including iOS, iPadOS, watchOS, macOS and Safari. Check out the details here. These releases are recommended to be installed by all users.
This is a companion discussion topic for the original entry at https://www.cambiumnetworks.com/blog/whats-all-that-apple-traffic-on-my-wi-fi-network/