nanog at daork.net
Tue Aug 19 23:42:29 CDT 2008
On 20/08/2008, at 6:39 AM, Jay R. Ashworth wrote:
> On Tue, Aug 19, 2008 at 04:56:33PM +1200, Nathan Ward wrote:
>> Sit up and pay attention, even if you don't now run IPv6, or even if
>> you don't ever intend to run IPv6. Your off-net bandwidth is going to
>> increase, unless you put some relays in. As a friend of mine just
>> to me: "Welcome to your v6-enabled transit network, whether you like
>> it or not ;-)".
> So you're saying Slashdot *lies*?
They don't intentionally lie, but the study they are reporting on is
"Our research looked at all IPv6 traffic—both native and tunneled,
including Teredo, which encapsulates IPv4 traffic in UDP
datagrams using UDP port 3544. We found a peak of only 12 Mbps of
Teredo traffic, representing around 10 percent of the
I P protocol 41 traffic."
Teredo uses 3544/UDP to for Client<->Server communication. That is for
relay discovery when needed, and the qualification procedure - not
much traffic. Client<->Relay communication MAY use 3544/UDP, Client<-
>Client communication MAY use 3544/UDP.
In my experience (packets I have been analysing in the last 24 hours
for example) suggests that not many actual data packets are on UDP/3544.
I'll get some exact numbers on that in a few hours if you like.
Also that report only includes data up until July 2008. uTorrent with
Teredo and IPv6 stuff was released 9 August - which is the intention
for my original message.
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