[ipv6-wg] what is v6-only?

Hi Vaibhav, Jen, and list,

Jen Linkova <furry13 at gmail.com> writes:

> On Wed, May 4, 2016 at 7:51 PM, Bajpai, Vaibhav
> <v.bajpai at jacobs-university.de> wrote:
>> Hello,
>>
>> What does v6-only mean?
>>
>> a) A client only has v6 address and can only route to v6 destinations
>>
>> b) A client only has v6 address but can route to dual-stack
>> destinations using a network translator (such as NAT64)
>
> From a client perspective, there is no difference between a) and b) -
> in both cases the client has no IPv4 address and all communications
> happen over IPv6 only.

put differently: "v6-only" only makes sense with regard to a specific
machine, or set of load-balanced machines, or similar.  If you bring in
NAT64, forward proxies or similar, then "v6-only" as a term doesn't
really make much sense anymore.

That said, I'd call the combination of a "v6-only server" and a reverse
proxy viewed as a whole dual-stacked.

> However there might be additional services provided to allow access to
> non-IPv6-enabled destinations. It might be a service provided by the
> network (such as NAT64+DNS64) or it might be smth on a host itself
> (464XLAT).

Don't forget a forward proxy in the DMZ of the user.  That's what you
almost always find in enterprise environments.


Cheers,

    Benedikt

-- 
Benedikt Stockebrand,                   Stepladder IT Training+Consulting
Dipl.-Inform.                           http://www.stepladder-it.com/

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