How many devices need IPs? Is there a reason ARIN can't be used? Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Jun 17, 2015 10:18 PM, "John Levine" <jo...@iecc.com> wrote:
> >IIRC, the short answer why it wasn't repurposed as additional unicast > >addresses was that too much deployed gear has it hardcoded as > >"reserved, future functionality unknown, do not use." Following an > >instruction to repurpose 240/4 as unicast addresses, such gear would > >not receive new firmware or obsolete out of use quickly enough to be > >worth the effort. > > More to the point, the amount of work required to fix all the existing > equipment to handle 240/4 would not be a lot less than the work > required to get it to handle IPv6, and it would only have pushed the > IPv4 exhaustion out a few years. It was entirely reasonable to > conclude that it would not have been a good use of anyone's time or > money. > > Look at the bright side: you can use the money you didn't spend on > 240/4 upgrades to buy slightly used IPv4 space on the grey market > or CGN equipment. > > R's, > John >
