[Sis-csi] IPv6?

[Edward Greenberg]

Marc,  Maybe this is a dumb question but if the all the Earth systems 
are transferring to IPv6 is there anyone that is the broker for 
trading IPv6 address space for IPv4 address space.  If so then by 
2010 there should be lots of IPv4 addresses available.  If NASA 
transforms itself to IPv6 then what happens to all of NASA's IPv4 
address?  If JSC transfers over to IPv6 would there be enough IPv4 
addresses to accommodate NASA's space address space needs 
indefinitely?



At 10:06 AM -0400 6/7/07, Marc Blanchet wrote:
>Hi,
>  as you might have noticed, ARIN board recently advised the 
>community that IPv4 addresses are going away and push the community 
>to consider IPv6 asap... The concensus currently is that IPv4 
>addresses will be gone by 2010 from the IANA pool and then x months 
>later from the RIR pool.  Given that space projects are "long term" 
>projects, at the time some IP address space will be needed for space 
>in, say 2012, then v4 addresses won't be available. only IPv6 
>addresses will be available.
>  given the multi-international scope of space projects, I can't 
>imagine having IPv4 NATs between spacecrafts that forces VoIP 
>traffic to go through earth just because of traversing NAT... 
>ouach....
>  therefore, I think this group should really consider:
>- ipv6 as the primary IP protocol
>- ipv6 as possible only IP protocol
>- designing a contingency plan if v4 is still considered.
>
>comments?
>
>references:
>- ARIN board resolution on IPv4/Ipv6: 
>http://www.arin.net/announcements/20070521.html
>- exhaustion of IPv4 address space timeline: 
>http://www.potaroo.net/tools/ipv4/index.html
>
>Marc.
>
>
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