nanog mailing list archives

Re: Comcast enables 6to4 relays


From: John Jason Brzozowski <john_brzozowski () cable comcast com>
Date: Sun, 29 Aug 2010 09:28:42 -0400

Mikael,

I agree with your points and echoed them in my earlier reply.  6to4 is out
there and is likely not to go away any time soon.  Folks should definitely
see what 6to4 relay they default to, you might be surprised (or not).

FWIW - I updated ARIN's wiki for 6to4 relay deployment with some generic
updates.  I will add some more text shortly that folks may find useful if
they decide to deploy their own 6to4 relays.

John 


On 8/29/10 3:19 AM, "Mikael Abrahamsson" <swmike () swm pp se> wrote:

On Sat, 28 Aug 2010, John Jason Brzozowski wrote:

In most cases, we observed that 6to4-enabled operating systems and devices
were attempting to use a 6to4 relay infrastructure hosted by a midwestern
university.

Before that they used our (Tele2) 6to4 relays in Amsterdam and Paris. I
think this was discussed here 1-2 years back.

I couldn't find it, but
<http://gpshead.blogspot.com/2009/01/consumer-router-ipv6-firewall-fail.html>
says the same thing.

I urge more people to look up what 6to4 relays you're using and set up
your own if needed. People *are* using it and you not doing it is making
things worse for your customers. Yes, 6to4 is generally bad but it's out
there. Everybody needs to think about it.

=========================================
John Jason Brzozowski
Comcast Cable
e) mailto:john_brzozowski () cable comcast com
o) 609-377-6594
m) 484-962-0060
w) http://www.comcast6.net
=========================================



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