Home > Mac administration, Mac OS X > Enabling an IPv6-only network using Internet Sharing on El Capitan

Enabling an IPv6-only network using Internet Sharing on El Capitan

One of the hidden features of OS X El Capitan is the ability to enable Internet Sharing to provide only IPv6 addresses. This feature was added to El Capitan to help developers ensure their apps are ready to work with IPv6. It uses NAT64, which facilitates communication between IPv6 and IPv4 hosts by using a form of NAT.

For those interested in having the ability to set up an IPv6-only network, see below the jump for the procedure.

Pre-requisite:

A Mac running OS X 10.11.x

1. Open System Preferences

2. Option-click on the Sharing preference pane

Screen Shot 2015 10 05 at 7 37 22 AM

 

3. A Create NAT64 Network checkbox will appear (this may also be labeled Create IPv6 Only Network.)

Screen Shot 2015 10 05 at 7 36 10 AM

 

4. Check Create NAT64 Network.

Screen Shot 2015 10 05 at 7 36 29 AM

5. Select the interface to share out over

Screen Shot 2015 10 05 at 7 36 49 AM

6. Check the Internet Sharing checkbox

Screen Shot 2015 10 05 at 7 36 50 AM

 

7. When prompted, click the Start button

Screen Shot 2015 10 05 at 7 36 58 AM

8. An IPv6-only network should now be available.

Screen Shot 2015 10 05 at 7 37 05 AM

  1. Steve
    October 7, 2016 at 8:42 am

    Hmm… that doesn’t seem to be an option for everyone on 10.11.x My Macbook Pro (2010) doesn’t show the ‘Create NAT64 Network’ or ‘Create IPv6 Only Network checkbox at all.

    • Steve
      October 7, 2016 at 8:46 am

      Ah. It does it I read the tiny detail about option-clicking Sharing. Might be worth making that *bold* for idiots in a hurry like me. 🙂

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