0:0:0:0:0:0:0:1(or just : :) It is a special IPv6 address that allows the system to send a message to itself for testing. Other IPv6 special addresses are:unspecified address, site-local address,link-local address,multicast and anycast addresses.
The IP address 127.0.0.1, which has been specified by the Internet Engineering Task Force as the IP address to use in conjunction with a loopback driver to route outgoing packets back to the source computer. See also loopback driver.
an address that tells the computer not to test its connections to another computer, but to test its own basic network setup
The address of your computer. It has IP address 127.0.0.1. Also called 'local host'.
A special IP number that is designated for the software loopback interface of a machine. The loopback interface has no hardware associated with it, and it is not physically connected to a network. This allows testing of software even if a physical device goes down.
The address of the local computer used for routing outgoing packets back to the source computer. This address is used primarily for testing.