On 2023-04-29 17:39, James Knott wrote:
That's only true because people have learned a lot of bad habits with
IPv4. Also, originally, all IPv4 addresses had the same size subnet,
/8. As that allowed only 256 networks, address classes were
introduced, to provide more, smaller networks. Then even that proved
inadequate, so Classless InterDomain Routing (CIDR) was introduced
which is what we've been using for decades.
https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing
Here's a bit more info:
"Versions 2 and 3, and a draft of version 4, allowed an address length
of up to 128 bits,[6] but this was mistakenly[citation needed] reduced
to 32 bits in the final version of IPv4."
Vint Cerf, one of the creators of IP said he intended the address space
was to be much larger.
https://en.wikipedia.org/wiki/Internet_Protocol
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