A computer "fe80:5::aede:48ff:fe33:4455" is trying to connect

Welcome to the Apple Support Communities.

Would you have Norton installed by chance? If so, uninstall it.

Mac computers do not need any sort of anti-virus, cleaners, VPNs, etc. The only thing they are good at is creating false marketing promises and taking consumers' money. They are all scams. In fact, anti-virus and other cleaners cause performance issues, security issues, and make macOS appear buggy. Your Mac is far worse with these types of Apps installed.

Mac computers have protection built-in, which is the best protection for your Mac. For specifics on macOS Security, see: macOS - Security - Apple and Protecting against malware in macOS - Apple Support. Mac computers also have built-in storage recommendations: Optimize storage space on your Mac - Apple Support. You can even use the built-in macOS Firewall: Block connections to your Mac with a firewall - Apple Support. Other than that, all you should do is restart your Mac approximately once a week and keep macOS up to date: Update macOS on Mac - Apple Support.

Jack

Audrey Mullen wrote:

Yes, I have Norton. Is a computer trying to connect for diagnostic issues?

As I suspected, yes, you have Norton. It needs to go. It is trying to block important system processes.