Hi, On Mon, Jun 18, 2018 at 06:23:28PM -0500, David Farmer wrote:
If you receive packets sourced from 2002::/16 where do you plan to send responses? They are valid IPv6 packets and addresses.
I can see only two ways to handle those - run a local relay to send 2002::/16 -> ipv4 world - drop these packets, hard
If you don't want to provide your customers with a route to 2002::/16 that is your business, but recommending that 2002::/16 is a bogon mean no one should accept or advertise the route which means no one can effectively use 6to4. I'm happy to say that, but not without some data to back it up.
No one *can* effectively use anycast 6to4, which was the whole point of the depreciation RFC. It needs to die, horribly, in flames. Anyone using it needs to feel the pain of enabling a broken protocol. ISPs need to have their customers call the help desk if they enable 6to4 on customer routers or in their own network, instead of deploying proper IPv6. (Note that 6rd is not "anycast 6to4" and as thus not subject to this rant) Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard, Michael Emmer Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279