Re: shared address space... a reality!

[Christopher LILJENSTOLPE <cdl () asgaard org>]

Greetings Dave,

        Having been one of the authors of this, and, at the time, unfortunately looking down the barrel of a CGN 
deployment (in AU).  I can say, at least in our case, it had nothing to do with monitoring or intercept.  In fact, CGN 
actually made that more difficult in some circumstances.  And this was a carrier that definitely had that requirement.

        Chris

On 17Mar2012, at 10.33, Dave Edelman wrote:

> Some major stakeholders are under legal or regulatory obligation to supervise and control. A small number of control 
> points makes this less awful to effect. 
>
> Dave Edelman
>
>
> On Mar 16, 2012, at 16:21, "cdel.firsthand.net" <cdel () firsthand net> wrote:
>
> > NAT at the edge is one thing as it gives an easy to sell security proposition for the board. But CGN controlled by 
> > whoever sitting between their NATs does the opposite. 
> >
> >
> >
> > Christian de Larrinaga
> >
> >
> > On 16 Mar 2012, at 19:35, William Herrin <bill () herrin us> wrote:
> >
> > > On Fri, Mar 16, 2012 at 2:01 PM, Octavio Alvarez
> > > <alvarezp () alvarezp ods org> wrote:
> > > > On Tue, 13 Mar 2012 23:22:04 -0700, Christopher Morrow
> > > > <christopher.morrow () gmail com> wrote:
> > > > > NetRange:       100.64.0.0 - 100.127.255.255
> > > > > CIDR:           100.64.0.0/10
> > > > > OriginAS:
> > > > > NetName:        SHARED-ADDRESS-SPACE-RFCTBD-IANA-RESERVED
> > > >
> > > > Weren't we supposed to *solve* the end-to-end connectivity problem,
> > > > instead of just letting it live?
> > >
> > > "We" forgot to ask if all the stakeholders wanted it solved. Most
> > > self-styled "enterprise" operators don't: they want a major control
> > > point at the network border. Deliberately breaking end to end makes
> > > that control more certain. Which is why they deployed IPv4 NAT boxen
> > > long before address scarcity became an impactful issue.
> > >
> > > Regards,
> > > Bill Herrin
> > >
> > >
> > > -- 
> > > William D. Herrin ................ herrin () dirtside com  bill () herrin us
> > > 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
> > > Falls Church, VA 22042-3004

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