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Which of the following is an IPv6 equivalent for theIPv4address 127.0.0.1?
127::1/128
FE80::1/10
1::/128
::1/128
The IPv4 loopback address 127.0.0.1 is equivalent to the IPv6 loopback address ::1/128. IPv6 addresses that have a prefix of FE80 or addresses that starts with FE8, FE9, FEA and FEB are IPv6 link-local addresses. (https://blog.icann.org/wp-content/uploads/2010/07/ipv6-address-types.pdf)
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