6to4 status (again)

Dmitry Anipko Dmitry.Anipko at microsoft.com
Wed Feb 27 22:57:45 CET 2013

>> I see a lot of BitTorrent traffic from Win7/WinXP preferring 6to4<->teredo.

My understanding is that some peer to peer apps are explicitly using Teredo, because it gives them some amount of NAT traversal "for free". 

>>What exactly Win7/Win8 software prefer v4<->v4?

Chris's statement about preference is correct for apps which do not explicitly specify, what interface/address they want to use - e.g. user doing web browsing and the browser using mainstream Windows networking APIs to make a connection. 

-----Original Message-----
From: ipv6-ops-bounces+dmitry.anipko=microsoft.com at lists.cluenet.de [mailto:ipv6-ops-bounces+dmitry.anipko=microsoft.com at lists.cluenet.de] On Behalf Of Max Tulyev
Sent: Wednesday, February 27, 2013 1:47 PM
To: ipv6-ops at lists.cluenet.de
Subject: Re: 6to4 status (again)

What exactly Win7/Win8 software prefer v4<->v4? I see a lot of BitTorrent traffic from Win7/WinXP preferring 6to4<->teredo.

Kiev, Ukraine. We have 14(fourteen!!!) ISPs in one house providing 100mbps for $12/mo or 1000mbps for $20/mo.

And to differ from that mob, we have to do something really different. 
For example, provide a native IPv6 while other don't. So may be a monopoly is not so bad for a slow lazy business... :)

On 27.02.13 22:30, Christopher Palmer wrote:
> Catching up to the thread... sorry if this is randomizing
> Dropping some info.
> 1.Window's prefix policy, in Win8 and Win7, means that IPv4->IPv4 is 
> generally preferred over 6to4->NativeIPv6.
> 2.The majority of home users don't have routers that support UPnP 
> management of NAT/FW openings, at least from our telemetry.
> Separate from the IPv6 question, I'm not as enthusiastic on the 
> ability of an everyday user to get IPv6 access. ISPs are often 
> regional monopolies, and if your local market doesn't have IPv6, you're hosed.
> Tunnel brokers notwithstanding.
> Not to oversimplify the issue too much - but I'd bet that the easiest 
> and most geographically available way to get IPv6 in the United States 
> is to go to Verizon and get a new LTE hotspot for your house. A 
> frustrating reality...

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