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I would like to check some websites by using IPv6 only: not only connecting with an IPv6 address but also checking that every other following connection (e.g., for embedded content with iframes) is performed with IPv6.

Is there a browser where I can disable IPv4? Or a proxy I can install?

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    One of the key points of the modern network-stack is that higher levels in the stack do not depend on the underlying layer: a web-browser, or any application, is ignorant of the underlying transport protocol and again that is ignorant of the underlying physical medium. This would not be a web-browser option, you would instead configure your network-stack to route everything over IPv6 interfaces. – Dai Nov 10 '15 at 7:49
  • Yes but maybe there is a proxy resolving every DNS query by looking at AAAA records only. – Matteo Nov 10 '15 at 7:54
  • I also did not find any way to temporarily disable IPv4 on OS X – Matteo Nov 10 '15 at 7:54
  • You'd have to go to your network adapter settings and turn IPv4 off. – Sander Steffann Nov 10 '15 at 9:42
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You can disable IPv4 in your OS and adding some public DNS64/NAT64-Resolver. You can create your own IPv6-only-environment: Apple has prepared such an environment for testing purposes.

https://developer.apple.com/library/prerelease/ios/documentation/NetworkingInternetWeb/Conceptual/NetworkingOverview/UnderstandingandPreparingfortheIPv6Transition/UnderstandingandPreparingfortheIPv6Transition.html#//apple_ref/doc/uid/TP40010220-CH213-SW1

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Use Firefox Browser! It can be input ipv6 address on URL blank. If you have bookmark made by IPv6 address, Firefox Browser will work on IPv6 address.

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  • I am not sure how this answers the question - can you elaborate? – Allan May 14 '17 at 19:08
  • Any browser supports the URL with IPv6 addresses, the question is how to force it for every further connection (for example for embedded resources) – Matteo May 16 '17 at 14:14

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