[tor-relays] Improving Relay IPv6 - RIPE Grant

[NOC]

On 16.12.2019 20:37, Ralph Seichter wrote:
> * NOC:
>
>> I see a great benefit here, you could default to IPv6 for everything
>> and enable IPv4 only as fallback [...]
> Preferring IPv6 over IPv4 is not even remotely the same as your original
> call to "lets drop all IPv4 only relays from consensus 2020 finally", as
> you wrote in message <08fee42f-f45d-a8c4-d4e6-c83c05b4fb08 at afo-tm.org>.

Read the full sentence, dropping all IPv4 only relays is unavoidable 
because they can't reach relays behind CG-NAT, preferring IPv6 over IPv4 
is only a handy side effect of this.