On Mon, 19 Apr 2010, Edward Ned Harvey wrote:

>> From: discuss-boun...@lopsa.org [mailto:discuss-boun...@lopsa.org] On
>> Behalf Of da...@lang.hm
>>
>> I know that the people pushing IPv6 consider NAT evil and want to
>> make it impossible.
>
> Reference please?  I never heard anything like that.  I would agree that
> it's generally not expected to be encouraged.  But made impossible?  I call
> BS.

many years of discussions with people on mailing lists about IPv6, the 
constant barrage of how IPv6 will restore the 'true' Internet where every 
system has a routable IP address so it can go back to the pure end-to-end 
connectivity where all machines are equal, etc.

I've heard it too many places from too many different people to bother 
trying to document it.

I had a situation recently where I needed to do IPv6 for the first time, 
and as I was setting it up I wanted to know how I would do NAT if I wanted 
to. The 'experts' that were helping me told me that NAT was just not 
available on IPv6, that this was a feature of the protocol and many parts 
of IPv6 would break (and given what I know about ipsec and the headaches 
that it has with NAT, this seemed reasonable, if short-sighted to me)

> FWIW, I'll half way agree, which is to say, there's no point to IPv6 if
> you're going to continue NAT.  Because if you're using NAT, there isn't an
> organization in the world that's too large to fit in 10.0.0.0/8

the last time I used this argument I was pointed at phone providers as a 
counterexample.

however, I agree that the need that there is very little reason to go to 
IPv6 due to the lack of IP addresses at this point in time. Any systems 
that you are using to access the Internet, or be accessed from the 
Internet still need IPv4 addresses. If you're going to do separate IP 
addresses internally that can't be accessed from the Internet, you may as 
well use the IPv4 RFC addresses.

David Lang
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