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Hi Geoff,<br>
<br>
Are you noticing a difference in ipv6 preference when dual stacked
depending on which web browser being used? Can you even detect
browsers that have just decided to stop using ipv6 even though it is
available?<br>
<br>
<rant><br>
<br>
For example on my dual stack connection at home when I go to
(<a class="moz-txt-link-freetext" href="http://labs.apnic.net/measureipv6/">http://labs.apnic.net/measureipv6/</a>) it works first time with
Firefox but fails with Chrome because it has yet again decided to
stop asking for AAAA records.<br>
<br>
For those playing along at home go to <a
href="chrome://net-internals/#dns">chrome://net-internals/#dns</a>
in chrome and see what it has decided to use as it's "<span
style="color: rgb(0, 0, 0); font-family: sans-serif; font-style:
normal; font-variant: normal; font-weight: normal; letter-spacing:
normal; line-height: normal; orphans: 2; text-align: -webkit-auto;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; font-size: medium; display: inline
!important; float: none; ">Default address family"</span><br>
<br>
</rant><br>
<br>
On 15/03/2012 12:42 PM, Geoff Huston wrote:
<blockquote
cite="mid:29A31A45-4F6D-4441-B1FD-E5A92CCCA88D@apnic.net"
type="cite">
<pre wrap="">
At APNIC we've been measuring IPv6 penetration for some months now, and with some generous assistance from Google, ISC and the RIPE NCC we've now managed to extend client-side testing of client's capabilities to fetch IPv6 web objects to a measurement system that now tests of the order of 500,000 clients per day across the Internet.
The worldwide picture is that some currently 0.4% of clients out there will prefer to use IPv6 when given the choice, while some 5.8% of clients show themselves of being capable of end-to-end IPv6 when presented with a V6 only URL. (<a class="moz-txt-link-freetext" href="http://labs.apnic.net/ipv6-measurement/Regions/001%20World/">http://labs.apnic.net/ipv6-measurement/Regions/001%20World/</a>)
Australia is a little better than the global average, with 0.83% of clients shows a preference for IPv6, and some 4.1% of Australian clients shows themselves as being capable of fetching an IPv6-only object. (<a class="moz-txt-link-freetext" href="http://labs.apnic.net/ipv6-measurement/Economies/AU/">http://labs.apnic.net/ipv6-measurement/Economies/AU/</a>)
If you have your own ASN you can also use this site to show the total v6 capability of clients who are within that ASN - (for example, Internode's clients' IPv6 capability can be seen at <a class="moz-txt-link-freetext" href="http://labs.apnic.net/ipv6-measurement/AS/4/7/3/9/index-months.html">http://labs.apnic.net/ipv6-measurement/AS/4/7/3/9/index-months.html</a>)
The general picture is that the IPv6 numbers are really quite low numbers at present, but the next year or so will be fascinating to observe.
I wonder how long IPv4 will hang around IF we start to push investment into IPv6 infrastructure - I hear these claims that IPv4 will persist forever, but frankly I have heard in the past the same claims being made about X.25 and Decnet, or FDDI for that matter, and I guess there are folk who would say the same about ATM. However my suspicion is that this industry is definitely not sentimental - as soon as interest and more importantly the money wanes the technology rapidly disappears!
So the real question becomes one of trying to understand, preferably with reliable data, what everyone is doing. At this point opinions are fun, but its data that is really valuable. If you run a web site, you can help us to measure the IPv6 capability of your client base, even if your site is IPv4-only today. Details of the IPv6 measurement program are at <a class="moz-txt-link-freetext" href="http://labs.apnic.net/measureipv6/">http://labs.apnic.net/measureipv6/</a>, and if you want to help us and inform yourself about the IPv6 capabilities of folk who use your web site, a way to do this is at <a class="moz-txt-link-freetext" href="http://labs.apnic.net/tracker.shtml">http://labs.apnic.net/tracker.shtml</a>
</pre>
</blockquote>
<br>
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