On Mon, Mar 27, 2023 at 12:48:13PM +0100, Richmond wrote:
I have configured an ipv6 tunnel. If I visit this site:
http://ip6.me/
The "normal" test shows my ipv4 address, and the:
http://ip6only.me/
shows the ipv6 address.
However if I switch my DNS from opendns to the one provided by my ISP
and then run the "normal" test it shows the ipv6.
The note says:
(preference depends on your OS/client)
So how is the preference determined? It seems to be determined by the
DNS, but why or how do I tell for example with host -v?
Modern browsers generally follow https://www.rfc-editor.org/rfc/rfc6555
and connect to both, using whichever connection completes first.
You may see different results on repeated connection attempts (but not
necessarily for immediate retries due to connection caching).
