I keep getting pop up from Norton 360, but I have no idea what it means

I keep getting these pop up windows from N360 asking for an action, but I have no idea what it means.  I am not a cyber security expert, that is why I hired Norton, but you need to explain things in plain English please!!!  Please see screenshot attached / uploaded.  "The computer "fe80:a::fc8a:53ff:fe87:99c1" is attempting to access sharingd on your computer. Do you want to allow this connection?"  

what is "sharingd"?  

what is "fe80:a:: blah, blah, blah???

this window pops up repeatedly and it gets in the way of my work, and I am this close to uninstall Norton.  Please help. 

Norton product name and version: Norton 360 8.6

OS is Big Sur macOS

[Edit: Clarified the subject]