<font class="Apple-style-span" color="#333333" face="verdana, sans-serif"><div><font class="Apple-style-span" color="#333333" face="verdana, sans-serif">Dear Marcin,</font></div><br></font><div class="gmail_quote">On Fri, Apr 29, 2011 at 2:16 PM, Marcin Cieslak <span dir="ltr"><<a href="mailto:saper@saper.info">saper@saper.info</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">On Fri, 29 Apr 2011, Sivasubramanian M wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
If the user accesses facebook from an IPv4 network, the FRONT page says,<br>
"This facebook page today is on IPv6. You are accessing this page from an<br>
IPv4 network, says some summary info about World IPv6 Day, about IPv6 and<br>
then shows a prominent link for accessing facebook on IPv4, and the rest of<br>
the user's experience is normal.<br>
</blockquote>
<br></div>
I can imagine how large lost reveneue will be. Teredo servers would probably crash, there not that many of them. However, maybe<br>
in 2012 it will not look as impossible as it looks today.<br></blockquote><div><br></div><div>Do we need Teredo servers here at all? The user from an IPv6 network goes to an IPv6 facebook home page. It is IPv6 to IPv6. There are two alternate ways of handling the IPv4 user. 1) the User is taken to an IPv6 page through tunneling, which you say is impossible on such a large scale. 2) The user from an IPv4 address is detected as an IPv4 user, greeted on a page that could still be an IPv4 page except for the message that "Today facebook home page is on IPv6, [ you can't get there, sorry ] You are accessing from an IPv4 network. To go to the usual face book page, click here" There is no tunneling involved here, only an 'unnecessary' redirect page, which will contain some info about IPv6 etc." And then when he clicks on the redirect URL, the user goes to the normal facebook page, rich for the day with a banner and some links on World IPv6 day.</div>
<div><br></div><div>IPv6 user => IPv6 home page with "you are on IPv6 message" => IPv6 and regular content => usual experience</div><div><br></div><div>IPv4 user => IPv4 page with "Oh, no you are on IPv4, alright, click here, we will take you to the usual facebook page" => facebook home page with IPv6 day banner => usual experince</div>
<div><br></div><div>Would this avoid the need for Teredo servers?</div><div><br></div><div>Sivasubramanian M</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<br>
There was hope one day that YouTube will introduce HD videos on<br>
IPv6 first for some period, but this didn't materialized.<br>
<br>
//Marcin Cieślak</blockquote></div><br>