Dealing with filtered 6to4 clients

[Martin List-Petersen]

Tore Anderson wrote:
> Hello list,
> 
> I've been doing some testing in order to determine whether or not it
> would be «dangerous» for our customers to dualstack their web sites. The
> largest problem I've found so far affects a very specific group of
> clients, which:
> 
> 1) are using Windows Vista or newer, and
> 2) are using the Opera web browser, and
> 3) are assigned public IPv4 addresses, and
> 4) are on a network which filters inbound proto-41 traffic.
> 
> In this case, the client will have a 6to4 tunnel interface automatically
> configured, and will prefer using it over native IPv4 for contacting
> dualstacked web sites.  

Why would 6to4 be preferred over native IPv4 here ? That's not the
behaviour intended.

Kind regards,
Martin List-Petersen
-- 
Airwire - Ag Nascadh Pobail an Iarthair
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