I changed the fixed ip address in network/interfaces on server XYZ, and "ip addr" reflects the change. I rebooted XYZ. I am able to ssh to the system using the new IP addr (192.168.1.1) . However ...
If you haven't done it before, changing your IP address may sound like something you need an advanced computer science degree for. But you can easily change your IP address with a VPN and other ...