In an IPv6 future, how will you solve IPv4 connectivity?

marcelo bagnulo braun marcelo at
Mon Oct 11 08:42:50 CEST 2010

  El 11/10/10 7:15, Ted Mittelstaedt escribió:
> I really see very little point in fielding a proxy server that will
> allow a IPv6-only customer to surf the IPv4 Internet - if they can
> do IPv6 then they can dual-stack.  I may do this though if we have
> early adopters that demand IPv6 only.
Right, the requests of some of these early adopters was what triggered 
the work on NAT64 on the IETF.
The rationale, as i understood it, is that they don't want to have to 
pay the cost of managing both a v4 and a v6 network.

Regards, marcelo

> I also see little point in fielding a proxy that allows IPv4-only to
> surf the IPv6 Internet.  Fielding a proxy like this costs us money
> and it's a given that the major content providers will be dual stacked
> for many years yet.
> Ted
> On 10/10/2010 7:05 AM, Roger Wiklund wrote:
>> Let's say for arguments sake that the prophecy is true, and in late
>> 2011/2012 a new user can only get an IPv6 address.
>> Have you guys concidered/tested how you will solve these users
>> connectivity to the IPv4 Internet?
>> I guess NAT-PT is out of the picture,
>> NAT64?
>> DS-Lite?
>> Also, as these new users are IPv6 only, how can IPv4 hosts communicate
>> with them? 4to6 NAT?
>> Thanks for your comments,
>> /Roger

More information about the ipv6-ops mailing list