|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: The Choice: IPv4 Exhaustion or Transition to IPv6
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Kevin Oberman Sent: Thursday, June 28, 2007 1:15 PM To: Stephen Wilcox Cc: John Curran; [email protected] Subject: Re: The Choice: IPv4 Exhaustion or Transition to IPv6 > Date: Thu, 28 Jun 2007 17:42:47 +0100 > From: Stephen Wilcox <[email protected]> > Sender: [email protected] > > > Hi John, > I wasnt specifically thinking of reclamation of space, I was noting a > couple of things: > > - that less than 50% of the v4 space is currently routed. scarcity will presumably cause these non-routed blocks to be: > :- used and routes > :- reclaimed and reassigned > :- sold on Some of it, but a large part of the "missing" space belongs to the US Government, mostly the military. It is very much in use and is routed carefully such that it does not show up in the public Internet. It might be replaced with RFC1918 space, but I'm not sure that there is enough 1918 space to do the job as the address space needed is quite large. Also, some is used where 1918 space certainly could be used, but I have spoken with those responsible to ask them to move to 1918 space and the answer is an unequivocal "NO", not now or ever. I don't understand this, but I know it exists. One research lab has multiple /16s and several are used by classified nets that lack any external connectivity. While these are wasted, getting them back is essentially impossible. ------------------------------------------------------------------- Sorry for the horrid formatting, but LookOut is corp. standard. As for your claim that these are wasted, I take issue with this. I have connectivity to several different classified networks, and all of them are segregated, but they DO have gateways so that specific things can pass between them. There isn't enough 1918 space to reconcile the number to .gov and contractor sites on these networks without hitting collisions, and they can't be aggregated despite overlap (like I said at the beginning, we have several coming in...) because they aren't all at the same classification level (which is why they have strictly controlled gateways between them). Jamie Bowden -- "It was half way to Rivendell when the drugs began to take hold" Hunter S Tolkien "Fear and Loathing in Barad Dur" Iain Bowen <[email protected]>
|