[arin-ppml] ARIN-prop-139 No reassignment without networkservice

Matthew Kaufman matthew at matthew.at
Tue Apr 12 21:49:23 EDT 2011

On 4/12/2011 5:25 PM, George Herbert wrote:
> Forgive me if this sounds dense, as I've been staring at
> fluorine-based rocket propellant reactions all day and not doing
> networking, but...
> On Tue, Apr 12, 2011 at 5:16 PM, Matthew Kaufman<matthew at matthew.at>  wrote:
>> Ok. How about:
>> 8) I sell you a "network service" which lets you access a few servers I run
>> in public address space that you can store backups on. I let you use a /20
>> of my space at your end to access those servers, but I don't have a circuit
>> or tunnel to you... you just use IP routing to reach them. Since I don't
>> provide you with a circuit, I give you an LOA so you can use this space with
>> some other transit provider.
> Service provider A provides customized backups service to end user C.
> A provides C some dedicated IPs for the backup service to use, as part
> of the backup service, organized into a /20.

Service provider A provides customized backups service to end user C.
The backup servers run in one block. A provides C some IP addresses from 
a different block and configures their ACLs to let backups be done only 
from the block A is letting C use. (For instance). That's the /20.

> You seem to have the actual servers at A's location.
> Why would C need to or want to advertise the /20 ? -  It's using it to
> get from itself to A, across public internet links.  The servers are
> not at C's premise...

Right. The servers are at A's premise, and C can only get to A's premise 
using the public Internet... and only get through the ACLs if they use 
addresses from the /20 that A is letting them use. So they *must* 
advertise and use them on the public Internet in order to use the backup 
service at all, if nothing else.

Matthew Kaufman

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