6to4 status (again)

[Brzozowski, John Jason]

Tim I am sure we will chat during IETF, like I said earlier more to come on
this front.


On Fri, Mar 1, 2013 at 10:02 AM, Tim Chown <tjc at ecs.soton.ac.uk> wrote:

> On 1 Mar 2013, at 14:46, "Brzozowski, John Jason" <jjmb at jjmb.com> wrote:
>
> Oh btw not everyone will turn their relays off. Someone will try to be a
> hero. :)
>
> In the early days the hero was SWITCH. But I refer you to Batman on the
> topic of heroes :)
>
> Anyway, it would be great to get a list of, as Brian puts it, 'legacy'
> equipment that is doing this, or of specific applications that may be doing
> so (e.g. maybe P2P on certain platforms). Any intel from John or elsewhere
> would be really interesting.
>
> I know a significant number of Apple Airport Extremes were 'guilty' a few
> years ago, but updates were made available for that. Whether those were
> applied automatically or otherwise is another question.
>
> Tim
>
> On Mar 1, 2013 8:20 AM, "Tim Chown" <tjc at ecs.soton.ac.uk> wrote:
>
>> On Fri, Mar 1, 2013 at 8:00 AM, Ole Troan <ot at cisco.com> wrote:
>>
>>> John,
>>>
>>> > Ole we actually have experience that tells us it would be bad if we
>>> turned our relays.  Some streaming service experience is already not
>>> optimal over 6to4 using our relays largely related to the protocol not the
>>> relays themselves.  Turning ours down would result in the use of a single
>>> 6to4 relay on someone else's network.  Further this relay is hosted by a
>>> university.  For now we think it makes more sense to keep our running and
>>> encourage client side disablement until there is ~0 bits over 6to4.
>>>
>>> yep, I understand the choice and what bind you're in.
>>> my hope was that everyone, including the university would stop their
>>> 6to4 public relays.
>>>
>>
>> Well that university should quickly spot the 'DoS' that would suddenly
>> hit it, and also turn the relay service off.
>>
>> The whole turn-off could ripple through the net in a couple of weeks,
>> with luck :)
>>
>> The question really is how many systems are using 6to4 by choice? If it's
>> an issue with address selection where native IPv4 and 6to4 exist, then that
>> should be fixed, else the relays will always be needed.
>>
>> The geeks who want IPv6 can surely use tunnel brokers.
>>
>> Tim
>>
>>
>
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