@jackbrewster I managed to get temporarily get rid of them by deleting /System/Volumes/Data/Library/Preferences/com.apple.networkextension.plist, but that caused some weird duplication in my VPN connection settings. As far as I've found there's no official way to clean this up.

It's part of the Local Network Security stuff added in Sequoia: https://mjtsai.com/blog/2024/10/02/local-network-privacy-on-sequoia/