IPv6 uses 16-byte addresses. If a block of 1 million addresses is allocated every picosecond, how...
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IPv6 uses 16-byte addresses. If a block of 1 million addresses is allocated every picosecond, how long will the addresses last? With 16 bytes there are 2128 or 3.4 1038 addresses. If we allocate them at a rate of 1018 per second, they will last for 103 years. This number is 1000 times the age of the universe. Of course, the address space is not flat, so they are not allocated linearly, but this calculation shows that even with an allocation scheme that has an efficiency of 1/1000 (0.1 percent), one will never run out. IPv6 uses 16-byte addresses. If a block of 1 million addresses is allocated every picosecond, how long will the addresses last? With 16 bytes there are 2128 or 3.4 1038 addresses. If we allocate them at a rate of 1018 per second, they will last for 103 years. This number is 1000 times the age of the universe. Of course, the address space is not flat, so they are not allocated linearly, but this calculation shows that even with an allocation scheme that has an efficiency of 1/1000 (0.1 percent), one will never run out.
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