Public accessible IPv4 servers on an IPv6 net?

[Gustawsson]

What would be the best way of enabling an ISP customer that's being given an IPv6 public adress to their CPE to have IPv4 servers accessable from the outside?

Some background information:

The customer CPE has dual stack on its LAN (customer net) and only an IPv6 interface on the WAN side.

[sean_evershed]

Hi

Assuming you had the infrastructure to support it potentially you could use DS-Lite.

See below:

http://en.wikipedia.org/wiki/IPv6_transition_mechanisms

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[Gustawsson]

Thank you for the reply. You mean to say that by using DS-lite for customers, they can still have their IPv4-only servers running as they are today and still be accessable from the outside (Internet)?

[sean_evershed]

Hi,

I've done some more reading on the subject. See below a Cisco whitepaper on Carrier Grade IPv6:

http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6553/white_paper_c11-558744-00.html

For DS-Lite it states that the IPv4 address space of the subscriber is a private one.

IPv4 Residual Deployment (4rd) or Dual IVI may better meet your requirements.

Regards

Sean