Discussion
The size of IPv6 address is :
Answer: C
An IPv6 address is 128 bits long.
IPv6 was designed to replace IPv4's 32-bit addresses, whose supply of about 4.3 billion addresses was running out. Its 128-bit addresses, written as eight groups of four hexadecimal digits, allow about 3.4 × 1038 addresses.
32 bits is the IPv4 address size, 64 bits is the size of the interface identifier half of an IPv6 address, and 256 bits is not used.
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