Avahi, in all my experience over many years, does nothing noticeable besides going into 100% CPU spin loops at random intervals. Looking it up online, it is reported and declared fixed every couple of years. I would like to know why it still happens, and the right way to get rid of it, or at least to know why I have to have it.

I don't have any other system daemons that like to drop into 100% CPU spin loops. Should I be happy it doesn't fork bomb? I guess I am.