[tor-relays] Bridge - how to configure obfs4 both: on IPv4 AND IPv6?

[David Figuera]

On Sun, 29 Sep 2019 04:00:13 -0400
Roger Dingledine <arma at torproject.org> wrote:

[...]
> It looks like you are encountering
> https://bugs.torproject.org/11211
> 
> Alas, I suggest sticking to ipv4 for now -- I think if you got ipv6
> working on your obfs4, you would next run into the problem that bridgedb
> doesn't currently give out ipv6 obfs4 addresses.

I've ran into this problem too.
On IRC I was suggested to run a vanilla bridge (without obfuscation) and
that's what I've done.
In torrc, I have two ORPort lines, one with only the port for IPv4 and
one with address:port for IPv6. Dont forget to enclose the IPv6 address in
square brackets.