Comcast enables 6to4 relays
wardenm at wardenm.net
Tue Aug 31 01:22:03 CDT 2010
> The list seems to be showing relays that announce both the IPv4 and the
> IPv6 anycast prefixes.
> I have noticed a number of deployments that announce the (in)famous IPv4
> prefix and then consider their deployment complete. I suspect that there
> is a lack of 2002::/16 announcements and this would be contributing to
> the regular problems with return paths.
> Obviously the IPv6 content networks benefit the most from having a relay
> translating back to IPv4.
> Anyone have experience with this?
> Graham Beneke
Is there a reason not to advertise more specific prefixes from 2002::/16 to ensure that traffic for your v4 routes comes back to your own 6to4 router?
If for example all my users have v4 addresses in 192.0.2.0/24, I could advertise 2002:C002:0000::/40 instead of or in addition to the full 2002::/16.
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