6to4 status (again)

Brian E Carpenter brian.e.carpenter at gmail.com
Thu Feb 28 14:45:58 CET 2013

On 28/02/2013 12:26, Jeroen Massar wrote:
> On 2013-02-28 13:19, Brzozowski, John Jason wrote:
>> Max I see quite a few 6to4 hosts that appear to be behind a home router
>> ie the router itself is enabling 6to4.  As long as the outside interface
>> is unique 6to4 will work if I am not mistaken.
> You are correct, Apple (Express/Extreme/TimeCapsule) for instance
> provide this and there are other boxes out there that can enable 6to4
> easily enough. As they indeed sit on the public IP they can do 6to4.

Yes, this was the original design point for 6to4; host-based
6to4 was a retro-fit.


> If the NAT box does not do 6to4 the client will likely start using
> Teredo, which is enabled per default and otherwise some popular torrent
> client like uTorrent will enable it for them.
> Greets,
>  Jeroen

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