[ppml] Legacy /24s

William Herrin arin-contact at dirtside.com
Sat Sep 1 21:20:37 EDT 2007

On 9/1/07, John Santos <JOHN at egh.com> wrote:
> I would like to point out for the millionth time that having PI
> space and taking up a routing slot are *NOT* the same thing.
> There are many legitimate uses of globally unique address space
> that don't require routing in the DFZ.  (For example private
> internets either on leased circuits or via VPN tunnels over
> the public Internet.)


The solution to this is staring you in the face. We have great gobs of
unroutable / semi-routable IPv6 space within the 6to4 spec. If you
already have unrouted IPv4 space, why not use the corresponding
unrouted 6to4 space for your non-DFZ tasks? Each /24 of IPv4 space
maps to a /40 of IPv6 space or 24M subnets.

Bill Herrin

William D. Herrin                  herrin at dirtside.com  bill at herrin.us
3005 Crane Dr.                        Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004

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