Comcast's 6to4 Relays

Mikael Abrahamsson swmike at
Tue Apr 19 21:55:33 UTC 2011

On Tue, 19 Apr 2011, Doug Barton wrote:

> Another view (one that I personally hold) is that any effort you might 
> be putting into making 6to4 work better would be better placed in 
> deploying real IPv6 instead; and that the world would be a better place 
> generally if all of the so-called "transition mechanisms" just went 
> away.

I am all for getting fewer people to use 6to4, especially without them 
actually making a decision to use it, but giving more people access to 
high quality (I hope they are) 6to4 relays is seldom a downside.

The drafts you mention make special notes that operators should NOT start 
to shut down relays, first of all we need to get fewer people to use 6to4, 
THEN we start to remove the relays. Starting at the relay end is bad, 

Mikael Abrahamsson    email: swmike at

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