单项选择题
Which of the following is the IPv6 loopback address?()
A.::1
B.1.1.1.1
C.127.0.0.1
D.255.255.255.254
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单项选择题
A.::1
B.1.1.1.1
C.127.0.0.1
D.255.255.255.254
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