IPv6 ingress filtering

[Brian Carpenter]

Well yes, there must be a return path, otherwise Amos would see no traffic.
Nobody is suggesting to *promote* 6to4, just no need to filter it.

Regards
    Brian
    (via tiny screen & keyboard)

On Wed, 15 May 2019, 21:56 Ole Troan, <otroan at employees.org> wrote:

> > Anycast 6to4 needed to be assassinated, and that has more or less
> happened. If classical unicast 6to4 is still working for a few people, I
> don't really see any harm in it. Of course I agree that native is better.
>
> As far as I can tell there is really no flavour of 6to4 that can be
> deployed in a way where it works well.
> Even without the anycast IPv4 route, the far end IPv6 node would have to
> have a good route back to 2002::/16.
> If automatic tunnels are required 6RD contains all of the 6to4 issues
> within the ISP.
>
> Cheers,
> Ole
>
>
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