fe80::64d2:bd2e:fa62:b911, and ::1 are valid IPv6 addresses from the given options.
Explanation:
- fe80::64d2:bd2e:fa62:b911 is a valid IPv6 address as it has correct number of blocks, that is separated by :, and a :: multicast group that fills the blocks with 0's.
- fe80::g90p:bd2e:fa62:b911 is not a valid IPv6 address because IPv6 address allows only hexadecimal values that is from 0-9 and a to f. Here it contains value g and p. Hence invalid.
- fe80::64d2:bd2e::b911 is not valid because two multicast group "::" is not allowed in IPv6 address.
- ::1 is a valid IPv6 address, here "::" is filled by 0's and it is used as a destination address and not as a source address.
