On 17-sep-2007, at 12:11, Eliot Lear wrote:

Comments?

   At the present time, most IP implementation consider any IP address
   in the range 240.0.0.0 through 255.255.255.255 to be invalid as the
   source or destination of a datagram.

This is untrue. _Most_ implementations have no problem with it.

I've thought about writing a draft like this myself and given the use for these addresses some thought. They'd be useful for things that do need global uniqueness, but can do without global reachability. A good example of that would be the numbering of network equipment. In ISP networks this can eat up a decent chunk of address space. Most of the devices in such networks are updated regularly so the addresses could be useful here relatively soon.


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