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loopback address
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    Also found in: Wikipedia 0.01 sec.

loopback address

An address that sends outgoing signals back to the same computer for testing. In a TCP/IP network, the loopback IP address is 127.0.0.1, and pinging it will always return a reply. The loopback address allows a network administrator to treat the local machine as if it were a remote machine. See loopback plug and ping.



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