Hi Detlef, <br><br><div class="gmail_quote">On Sat, Sep 15, 2012 at 2:35 AM, Detlef Bosau <span dir="ltr"><<a href="mailto:detlef.bosau@web.de" target="_blank">detlef.bosau@web.de</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 09/13/2012 06:38 AM, Pars Mutaf wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Andrew,<br>
<br>
China has IPv6 for example but I cannot talk to them.<br>
I don't have to install IPv6 to talk to them. If one day someone uses IPv7 (it is their right), I don't have to install IPv7.<br>
The fact that there is a version field doesn't mean that all versions are supported.<br>
</blockquote>
<br></div>
I think, you miss two basic points.<br>
<br>
First: There is no such thing as "the" end to end principle. Particularly, Internet communication is nothing which happens between the communication end points and only there, but most of the work is done at the nodes in between.<br>
</blockquote><div><br><br>This contradicts what you say below. Below you say that you want to avoid this complexity. Here you say that this the way it is. So I don't understand you message.<br><br> <br></div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
Second: The Internet is an overlay network by design. We want ONE common protocol which is supported by all nodes connected to this overlay network. Particularly, it shall not be the intention of the Internet to run several protocols in parallel. Nevertheless, this happened in the past, happens in the present and is expected to happen in the future, however it is not the basic intention. The more protocols you run in parallel, the more complex your intermediate nodes, which do all the routing work, will be. And it's certainly not our goal to make thinks unnecessarily complex.<span class="HOEnZb"><font color="#888888"><br>
</font></span></blockquote><div><br>What do you mean by "parallel"? Why do you assume that the protocols will be run in "parallel?" <br><br><br> </div><div><br><br> </div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<span class="HOEnZb"><font color="#888888">
<br>
DB</font></span><div class="HOEnZb"><div class="h5"><br>
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Detlef Bosau<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br><a href="http://www.content-based-science.org" target="_blank">http://www.content-based-science.org</a><br><br>