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Definition: IP address numbers range from up to The IP address has special meaning on computer networks.

Computers normally show an address of when they are not connected to a TCP/IP network. Having this address, a computer cannot be reached or communicate with any other devices over IP.

TCP/IP software applications also use as a programming technique to monitor network traffic from any valid IP address. While connected computers do not use this address, messages carried over IP sometimes include inside the header when the source of the message is unknown.

Troubleshooting IP Address Problems

If a computer is properly configured for TCP/IP networking yet still shows for an address, try the following to troubleshoot this problem and obtain a valid address:
  • For networks with dynamic (DHCP) address support, release and renew the computer's IP address.
  • For networks that require static IP addressing, configure a valid IP address on the computer
See also: Working With IP Addresses

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