On Sep 18, 2012, at 09:38 , Jason Baugher <ja...@thebaughers.com> wrote:

> On 9/18/2012 11:01 AM, Beeman, Davis wrote:
>> Orbits may not be important to this calculation, but just doing some quick 
>> head math, I believe large skyscrapers could already have close to this 
>> concentration of addresses, if you reduce them down to flat earth surface 
>> area.  The point here is that breaking out the math based on the surface 
>> area of the earth is silly, as we do not utilize the surface of the earth in 
>> a flat manner...
>> 
>> Davis Beeman
>> 
>> 
>>> On Mon, Sep 17, 2012 at 11:27:04AM -0700, Owen DeLong wrote:
>>> 
>>>> What technology are you planning to deploy that will consume more than 2 
>>>> addresses per square cm?
>>> Easy. Think volume (as in: orbit), and think um^3 for a functional
>>> computers ;)
>> I meant real-world application.
>> 
>> Orbits are limited due to the required combination of speed and altitude. 
>> There are a limited number of achievable altitudes and collision avoidance 
>> also creates interesting problems in time-slotting for orbits which are not 
>> geostationary.
>> 
>> Geostationary orbits are currently limited to one object per degree of earth 
>> surface, and even at 4x that, you could give every satellite a /48 and still 
>> not burn through a /32.
>> 
>> Owen
>> 
>> 
>> 
> What about network-based objects outside of our orbit? If we're talking about 
> IPv6 in the long-term, I think we have to assume we'll have networked devices 
> on the moon or at other locations in space.
> 
> Jason

The IP protocol is not well suited to space travel. As such, I think there 
would be a non-address based scaling limit in IPv6 for that application and a 
new protocol would be needed.

Owen


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