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MS Windows - "hosts" file

Posted on 2011-09-25
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Last Modified: 2012-05-12
What is the meaning of "::1" in hosts file?

127.0.0.1       localhost
::1             localhost

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Question by:longjumps
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Papertrip earned 250 total points
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It is the IPv6 equivalent of 127.0.0.1 which is the loopback address
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by:yjchong514
yjchong514 earned 250 total points
ID: 36594900

::1 Localhost is the equivalent to 127.0.0.1 Localhost but using IPv6 protocol format , ::1 localhost is valid when Internet Protocol version 6 (IPv6) is implemented on a system.

IPv4 127.0.0.1
IPv6 ::1

"::" is an abbreviation for missing zeros, so this loopback entry really means

0000:0000:0000:0000:0000:0000:0000:0001 localhost
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