what cisco hardware support NAT64 configuration ??
Thanks for your quick response.
I have done some research & found ASA with 9.1.1 will help me achieving the same.
You are right the ASA does support NAT64, but it is stateless. For each IPv6 address you will need a corresponding IPv4 address. You will likely need a large pool of private IPv4 addresses to NAT into, these in turn, if requiring internet access, will then need to undergo stateful IPv4 NAT. NAT'ing traffic twice will require a little bit more effort to audit.