[Glen Turner <glen.turner@xxxxxxxxxxxxx>]

Guy Harris wrote:

> I.e., as implied by Michael Tuexen's mail, all 2^32 4-byte integral 
> values are, in some sense, syntactically valid IP addresses, although 
> there are conventions that render some of them not valid as host 
> addresses

Hi Guy,

You don't want to go down the road of semantically distingiushing
IPv4 addresses.  I've been down that rat-hole -- unicast source,
unicast destination, multicast destination, network, mask, inverted
mask not to mention local, enterprise and Internet-visible addresses.

And that's without 32-bit integers that look like IP addresses,
but aren't. OSPF area IDs would top that list.

Cheers,
Glen