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I Change My IP Address Quickly and Easily With a VPN. Here’s How to Get a New IP Address With and Without a VPN

Your public IP address is sort of like a street address; it's a unique string of numbers assigned by your internet service ...
CNET

Don’t Be Overwhelmed. Changing Your IP Address Is Easy With These Methods, Like Using a VPN

You can use various techniques, such as a VPN or proxy server, to quickly and easily change your IP address. Moe enjoys making technical content digestible and fun. As a writer and editor for over a ...
Ars Technica

Ubuntu using old IP despite IP change

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 ...