Which of the following IPv4 to IPv6 migration techniques does not separate DNS and the translation process?
- stateless NAT64
- stateful NAT64
Network Address Translation-Protocol Translation (NAT-PT) and DNS are inseparable, which is one of the reasons why NAT-PT has been deprecated. Network Address Translation IPv6 to IPv4, or NAT64, is superior to the NAT-PT technique because this solution has complete separation of the functions of NAT64 and DNS64.
Stateless NAT64 is a version of NAT64 that does not maintain a binding or session state when it performs Address Family Translation (AFT). As such, it cannot be used in some of the implementations in which stateful NAT 64 can. However, in this method, DNS and the translation process are independent.
Stateful NAT64 creates or modifies bindings or session state while performing translation. For this reason, it can be used to translate from an IPv4 network to an IPv6 network if static mappings are created, which stateless NAT64 cannot.
Mapping of Address and Ports using Translation (MAP-T) is a method of creating mappings to provide connectivity for IPv4 hosts across an IPv6 domain. Its operation is not connected to DNS.
Describe IPv6 NAT