[AusNOG] World IPv6 Day

[Mark Andrews]

In message <B5EEEC8D-DBA5-4038-89B3-228FF377C1EE at internode.com.au>, Matthew Moy
le-Croft writes:
> We've had a 6to4 gateway for quite a few years now.
> 
> However, we offer dual stack optin for customers so it doesn't see much tra=
> ffic!
> 
> Broken 6to4 is the major cause of issues with v6 connectivity.   Reality is=
> that no v6 is better than 6to4 or terredo most of the time.
> 
> (Have a look at Lorenzo's presentation at the Google IPv6 implementors conf=
> erence last year -  http://bit.ly/laqHji )
> 
> MMC
 
And most of the breakage is the result of "on by default" trying
to work through firewalls that are blocking the traffic.

Once you have 6to4 working it, generally, stays working.

Content providers complaining about 6to4 reverse paths not working
have nobody but themselves to blame.  Anybody that is dual stacked
can run a 6to4 relay, in most cases the servers can do the job
themselves.  You don't have to be using a 6to4 address to do this.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org