Comcast enables 6to4 relays

Mikael Abrahamsson swmike at
Sun Aug 29 07:19:01 UTC 2010

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 
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.

Mikael Abrahamsson    email: swmike at

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