On Tue, 2025-03-18 at 22:37 +0100, Patrick Dupre via users wrote:
127.0.0.1 localhost localhost.localdomain ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 Teucidide teucidide
Adding your own hostname to the loopback address *can* be a problem.
You may not realise networking isn't working, because you're connecting to yourself internally instead of the interface to the outside world.
Internal things that want the IP of your hostname now get told the 127.0.0.1 IP instead of the IP of your interface to the outside world.