1. NAT64-CPE Mode Operation for Opening Residential Service Gang Chen (chengang@chinamobile.com)chengang@chinamobile.com Hui Deng (denghui@chinamobile.com)denghui@chinamobile.com

2. Outline Introduction NAT64-CPE Mode Scenario Overviews NAT64-CPE Mode Operation NAT64-CPE Approach Discussion

3. Introduction The document has proposed an approach of NAT64-CPE mode, which would give residential service opportunities to be accessed by remote subscribers going through IPv6 networks. The document captures the fundamental NAT64 functionalities with special cares to fit into CPE scenarios and don't need cooperate with DNS64 any more

4. NAT64-CPE Mode Scenario Overviews IPv6-only client attached to a dual-stack network, but the destination server is running on a private site where there is NAT64-CPE numbered with public IPv6 addresses and private IPv4 addresses.

5. NAT64-CPE Mode Operation CPE Functionalities Description –It will perform the functionalities that normal CPE does except NAT44 forwarding –CPE should carry NAT64 capable mode without integrating DNS64; The NAT64 IPv6 prefix will be NSP; And, ISP will reserve distinct NSP for each CPE DNS Configuration Consideration –Each residential services should be represented by FQDN format. The corresponding naming resource record should be stored as AAAA.

6. NAT64-CPE Mode Operation Example

7. NAT64-CPE Approach Discussion NAT64-CPE is capable of making residential server to be accessed, by means of which users could visit the IPv4-only server remotely NAT64-CPE is a solely NAT64 deployed solution in CPE environment. It will compatible with legacy residential servers and no further updates requirements to DNS

8. Thanks & Questions