Re: [v6ops] Incremental Deployment of IPv6-only Wi-Fi for IETF Meetings

[Philip Homburg <[e-mail]>]

In your letter dated Mon, 17 Jul 2017 19:08:32 +0100 you wrote:
>"Break all unmodified hosts ?"
>I was under the impression that many unmodified hosts (and the software runnin
>g on them) was capable of running on an IPv6 only network - but there are spec
>ific, notable exceptions (OpenVPN config specific, and MS Outlook an Mac are t
>wo that have been mentioned), and that the scale is not clearly known.

I'll just assume that with 'IPv6 only' you mean NAT64/DNS64.

So the most obvious example that breaks with DNS64 is a web page that
refers to another http resource using an IPv4 literal. 

Anything that the user has done using IPv4 literals also breaks. Say the
address of a mail server, an ssh host, etc.

Of course, anyone who has manually configured Google's public DNS resolvers
is also in for a surprise.