6to4 status (again)

[Max Tulyev]

On 27.02.13 23:57, Dmitry Anipko wrote:
>>> 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".

Yes, it's possible from Teredo side. But why 6to4 which can't be behind 
a NAT?

>>> 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.

  - i.e. Internet Explorer only?