What are the reasons for changing IP address?
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Dial-up modem users
If you're connecting to the web employing a modem, whenever you hook up with the web , you will be assigned an IP address that's available. Although you'll get an equivalent IP address as a previous connection, often you will be assigned a special IP address whenever you connect. If you would like a static (address that does not change) IP address, you will need to attach to the web employing a broadband connection.
Broadband users
Unlike a dial-up modem, when connecting to the web with broadband, you're given a static IP address which will be an equivalent whenever . However, this address can still change, below are a couple of of the explanations why this might change.