stevetrease wrote:
Not really as far as I can see.
- Where sites/services support IPv6 and IPv4 ("dual stack"), client devices will connect with whichever is fastest.
Not strictly true. It's dependent upon the client and the application, but many will attempt an IPv6 connection first, and if they get a timely response they'll use that without trying IPv4. The so called 'happy eyeballs algorithm' from RFC 6555.
stevetrease wrote:
Now, as an experiment, I did disable IPv4 on one of my devices so it was IPv6 only. It was amazing how many sites don't support IPv6, so this experiment only lasted about ten minutes before I gave up and turned IPv6 back on...
Depending upon the browser you use, install the IPvFoo add on. When you browse to a site it will show the IPv4 and IPv6 connections that are made.
Regards