[tor-relays] Can it be done? - IPv6 only Relay

[Valter Jansons]

Stijn,

When you are starting up a relay, it will do self-tests on whether the
ORPort you have specified is reachable from outside network and that is
what you will have a bad time with. As IPv6 self-testing is not a thing yet
(Ref: TracTicket#24403
<https://trac.torproject.org/projects/tor/ticket/24403>) and it will then
be doing self-tests on the IPv4 address, which will fail as the relay will
not be reachable on that. There's TracTicket#4565
<https://trac.torproject.org/projects/tor/ticket/4565> about IPv6
relay-to-relay communications in general as well. All in all, some
groundwork has been laid out for IPv6 in general but research and (a lot
of) development is still to take place.

-- 4096R/A83CE748 Valters Jansons

On Mon, Dec 25, 2017 at 2:38 PM Stijn Jonker <sjcjonker at sjc.nl> wrote:

> Hi Nusenu/Valters,
>
> Thanks for the reply and links; what isn’t entirely clear is the following
> scenario. What if I provide IPv4 via NAT, and IPv6 for the relay, hiding
> the IPv4 address, possibly with the “NoAdvertise” on the IPv4 entries for
> those.
>
> Reading the trac page I’m not sure whether this would work, as there will
> be no IPv4 inbound possible, only IPv4 outbound and IPv6 in and outbound.
>
> Additionally would it benefit the tor service or is it then only “show”?
> Sorry but that’s not entirely clear from what I can find published (and
> googling away).
>
> Thx,
> Stijn
>
> On Mon, Dec 25, 2017, at 12:04, Valter Jansons wrote:
>
> Just for completeness' sake:
>
> Main IPv6 roadmap/feature matrix is at
> https://trac.torproject.org/projects/tor/wiki/org/roadmaps/Tor/IPv6Features
>
> The particular ticket for IPv6-only relay support is at
> https://trac.torproject.org/projects/tor/ticket/5788
>
> -- 4096R/A83CE748 Valters Jansons
>
> On Mon, Dec 25, 2017, 12:52 nusenu <nusenu-lists at riseup.net> wrote:
>
>
>
> Stijn Jonker:
> > Hi tor geniuses,
> >
> > Having some bandwidth to spare, and "some" IPv6 addresses but no IPv4. I
> decided
> > to setup an IPv6 only relay, and for diversity on OpenBSD, but I'm having
> > trouble getting online.
> > Is there any feasible way to do this as IPv6 only relay?
>
> Hello Stijn Jonker,
>
> unfortunately IPv6 only relays are not supported. All relays require an
> IPv4 address.
>  In (a far) future IPv6 only relays might be feasible - once most of the
> relays
> have IPv6 and relay-to-relay IPv6 connections are implemented.
>
>
>
> --
> https://mastodon.social/@nusenu
> twitter: @nusenu_
>
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