> From: John C Klensin <john-ietf@xxxxxxx>
Minor historical aside:
> Remember that the most important single protocol value space we have is
> one that we've gotten wrong (at least) three times
> ...
> -- We will never need more than 254 hosts.
> -- We can expand that a bit by using an IMP number/ host
> number pair.
> -- A 32-bit range will always be enough,
Actually (ironically), technically the so-called 'long IMP leader' had the
exact same number of address bits as IPv4 (i.e. 32 bits). (There was an 8-bit
'network number' field, althought it was never used.) See:
http://www.chiappa.net/~jnc/tech/arpapkt.html
Noel