Which takes priority, ipv4, or ipv6?

From	Richmond <dnomhcir@gmx.com>
Newsgroups	linux.debian.user
Subject	Which takes priority, ipv4, or ipv6?
Date	2023-03-27 14:00 +0200
Message-ID	<GdTG1-frks-1@gated-at.bofh.it> (permalink)
Organization	Frantic

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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?

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Which takes priority, ipv4, or ipv6? Richmond <dnomhcir@gmx.com> - 2023-03-27 14:00 +0200
  Re: Which takes priority, ipv4, or ipv6? Jeremy Ardley <jeremy@ardley.org> - 2023-03-27 14:00 +0200
    Re: Which takes priority, ipv4, or ipv6? Richmond <dnomhcir@gmx.com> - 2023-03-27 14:20 +0200
      Re: Which takes priority, ipv4, or ipv6? Jeremy Ardley <jeremy@ardley.org> - 2023-03-27 14:20 +0200
  Re: Which takes priority, ipv4, or ipv6? Vincent Lefevre <vincent@vinc17.net> - 2023-03-27 14:10 +0200
    Re: Which takes priority, ipv4, or ipv6? Richmond <dnomhcir@gmx.com> - 2023-03-27 15:30 +0200
  Re: Which takes priority, ipv4, or ipv6? Michael Stone <mstone@debian.org> - 2023-03-27 21:00 +0200
  Re: Which takes priority, ipv4, or ipv6? davenull@tuxfamily.org - 2023-03-28 13:00 +0200
  Re: Which takes priority, ipv4, or ipv6? Andy Smith <andy@strugglers.net> - 2023-03-28 17:40 +0200
    Re: Which takes priority, ipv4, or ipv6? Tim Woodall <debianuser@woodall.me.uk> - 2023-04-02 07:20 +0200

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