[p2p-research] IPv6 point-to-point tunneling: a major bonus for P2P developers

[Michel Bauwens]

Hi Marc,

nobody is covering it, so your piece would be very welcome, just make sure
that at least one or two main paragraphs are understandable by the
non-technical layperson,

(I for one cannot understand what you've written)

Michel

On Sat, Jan 17, 2009 at 12:42 PM, marc fawzi <marc.fawzi at gmail.com> wrote:

>
> Hi Michel,
>
> Let me know if no one has blogged this, so I can go blog it on P2Pf.
>
> ~~
>
> One of the hardest things (for a developer) making a new P2P application is
> having to deal with the inexact science of TCP/IP NAT traversal (which works
> only 50% of the time or less, depending on the NAT hardware), UDP hole
> punching (which does not work with Symmetric NAT used by business users and
> which leaves developers having to develop their own secure, reliable UDP
> based protocol or isolate the transport code from open source,
> application-specific UDP protocols like this one<http://azureuswiki.com/index.php/DistributedTrackerAndDatabase>from Azureus) or use UPnP (and the Mac OS X equavelant) which presents a
> major secuirty risk to users. Skype, BitTorrent and all P2P apps that use a
> direct PC-to-PC connection over the Internet have their own reliable, secure
> UDP based transport.
>
> I just realized today that with IPv6 there is built-in support for
> point-to-point tunneling (via NAT) over TCP (which is already a reliable
> protocol and can be used with SSL etc for securing communication) which
> means it solves the P2P connectivity since all IPv6 networking hardware must
> support it by default.
>
> I know I may be late to catch up with this fact about IPv6, especially
> since I (or rather my former team) spent quite a bit of time last year
> trying to build reliable, secure UDP protocol for a P2P application), but I
> think that by 2010 the US will have began to move to IPv6 on substantial
> scale.
>
> ~~
> I am also wondering if there is some anti-P2P politics going on that are
> hindering IPv6 adoption in the US, or it's just the expected inertia of
> hundreds of millions (or billions) of IPv4 network nodes that would have to
> be upgraded...
>
> In any case, IPv6 would be a major boon to P2P application development.
>
> Marc
>
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>
>


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