Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.0.0.1?
Click on the arrows to vote for the correct answerA. B. C. D.
The IPv4 loopback address 127.0.0.1 is used to test the network interface card (NIC) of a device by sending traffic to the device itself. In IPv6, the loopback address is represented by the ::1 address, which is option D in the question.
Option A, 0::/10, represents the IPv6 default route, which is used when no other route matches the destination address.
Option B, 2000::/3, is an address block reserved for Teredo tunneling, which is a technology used to encapsulate IPv6 traffic over an IPv4 network.
Option C, ::, represents the unspecified address, which is used to indicate that an address is not known or has not been assigned.
Therefore, the correct answer to the question is option D, ::1.