Opera Browser problem

[Ted Mittelstaedt]

Hi All,

   Just add me to the list of clueless users - I got the
SpamAssassin mailing list mixed in with ipv6-ops when
I sent this, this morning.

Ted

Ted Mittelstaedt wrote:
> This came up on the SpamAssassin mailing list,
> I just thought people might be interested:
> 
> 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.  
> 
> Further discussion on the SA list about this indicates this is
> a known bug that was reported to Opera - but the broken browsers
> are out there, of course.
> 
> Ted