A customer's environment includes hosts that support IPv6-only.
Several of these hosts must communicate with a public web server that has only IPv4 domain name resolution.
Which solution should the customer use in this environment?
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A. B. C. D.A.
In this scenario, the customer has IPv6-only hosts that need to communicate with a public web server that only has IPv4 domain name resolution. To enable communication between these hosts, the customer needs to implement a solution that can translate the IPv6 addresses used by the hosts to the IPv4 addresses used by the web server. There are several options for implementing this translation, including:
A. Utilize NAT64 to translate the addresses: NAT64 is a mechanism that allows IPv6-only hosts to communicate with IPv4-only hosts. It works by translating IPv6 packets into IPv4 packets and vice versa. In this case, the customer can use NAT64 to translate the IPv6 addresses used by their hosts into IPv4 addresses that the web server can understand.
B. Implement NAT44 at the edge of the customer network: NAT44 is a traditional NAT mechanism that translates IPv4 addresses to other IPv4 addresses. In this case, the customer could use NAT44 to translate the IPv6 addresses used by their hosts into IPv4 addresses that the web server can understand. However, this solution is not ideal as it requires the customer to deploy a separate IPv4 network to support NAT44.
C. Use 6to4 and a tunnel to translate the addresses: 6to4 is a mechanism that allows IPv6 packets to be transmitted over an IPv4 network. In this case, the customer could use 6to4 to tunnel IPv6 packets over an IPv4 network to reach the web server. However, this solution is not recommended as it can lead to performance issues and is not widely supported.
D. Implement 6PE to resolve hostname resolution: 6PE is a mechanism that allows IPv6 packets to be transmitted over an MPLS network. In this case, the customer could use 6PE to tunnel IPv6 packets over an MPLS network to reach the web server. However, this solution is not recommended as it requires the customer to deploy an MPLS network.
In summary, the best solution for the customer in this scenario is to utilize NAT64 to translate the IPv6 addresses used by their hosts into IPv4 addresses that the web server can understand. This solution is widely supported and does not require the customer to deploy a separate IPv4 network or an MPLS network.