I'm confused as to how the fe80 prefix is 10 bits and not 16.
fe80 IPv6 Link Local prefix is 10 bits?
The notation you see is standardized so you understand that the significant bits are the 1st 10 bits of 128 bits.
What you see is = 16bits but the
/10means that only the
first 10 bitswill remain unchanged...(i.e.
FE8..). So the range in HEX is the following:
note that the first 10 bits remain unchanged as the last 118 bits do. So `FE80/8 has a range of (2^118) addresses = ~33,230,700,000,000,000,000,000,000,000,000,000,000,000
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Thanks for the thorough explanation