RE: Only 5x IPv4 /8 remaining at IANA

[Ben Butler <ben.butler () c2internet net>]

Hi,

Showing my ignorance here, but this is one of the things I have wondered, given that we run both v4 and v6 for a period 
of time on the Internet, presumably at one time or another a particular resource may only be able in v4 land, then v4 
and v6, then finally v6 only.

I have never been particularly clear how an end network that exists only in v4 or v6 address space is able to access a 
resource that only exists in the other.  Is can sort of see some freaking huge NAT box type thing that summarizes v6 in 
a v4 address scope or contains the v4 address range at some point inside the v6 address space - but how can a v4 host 
get to a hot in v6 world that sits outside this without going through some form of proxy / nat gateway between the two.

Or are the two simply not inter-communicable?

Ben

-----Original Message-----
From: Patrick Giagnocavo [mailto:patrick () zill net] 
Sent: 21 October 2010 15:59
To: Owen DeLong; NANOG
Subject: Re: Only 5x IPv4 /8 remaining at IANA

On 10/21/2010 4:28 AM, Owen DeLong wrote:

> > Actually for those of my clients in one location, it served as an
> > impetus to extend a contract with Level3 for another 3 years - with
> > their existing allocation of a /24 of IPv4 addresses included.
>
> All well and good until some of their customers are on IPv6...
> Then what?

I'm sorry, can you expand on exactly what you mean by this?

Are IPv6 connected machines unable to access IPv4 addresses?

Or is this more IPV6 fanboi-ism?

--Patrick


 
 
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Ben Butler
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Fax: 0333 666 3331
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