Local Mac computer build IPV6 test environment

Since Apple required apps to support IPv6, many developers have been concerned about setting up an IPv6 testing environment. Currently, IPv6 adoption is still limited, making it challenging for some to test their applications effectively.

The solution isn't as complicated as it might seem. The basic idea is to use a Mac to create a hotspot and then connect your iPhone via Wi-Fi. This method is commonly used in many companies, but this time we're going a step further by setting up a local IPv6 DNS64/NAT64 network. This feature was introduced in OS X 10.11 and offers a great way to simulate an IPv6 environment without needing external infrastructure.

To ensure your app functions properly in an IPv6 environment, all you need is a Mac connected via a non-Wi-Fi internet source—like an Ethernet cable. The process involves creating a hotspot with your Mac and connecting your iPhone to that Wi-Fi. It sounds simple, but there are a few key steps to follow.

Let me walk you through the process of setting up an IPv6 test environment using a non-Wi-Fi connected Mac.

Open System Preferences and go to the Sharing section.

Once in Sharing, check the Internet Sharing option. Look for the option to "Create NAT64 Network."

If you don’t see the "Create NAT64 Network" option, try holding down the Option key while selecting Internet Sharing. This should reveal the missing option.

Select "Ethernet" as the source connection and share "Wi-Fi" to your device.

This setup allows your iPhone to connect to an IPv6 network through your Mac, enabling thorough testing of your app’s compatibility with IPv6. It's a practical and efficient way to prepare for Apple’s requirements without relying on external networks or complex configurations.

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