[tor-relays] Relay Guide - IPv6 Connectivity Testing

[Matthew Finkel]

On Tue, Jun 26, 2018 at 04:31:55AM +1000, teor wrote:
> 
> On 26 Jun 2018, at 02:40, nusenu <nusenu-lists at riseup.net> wrote:
> 
> >> It would also be nice if the relay, itself, performed self-checks of
> >> this connectivity and printed a warning log if some failure-threshold is
> >> reached (and possibly disabling the IPv6 ORPort). But, in reality, this
> >> is a hack 
> > 
> > I wouldn't call it a 'hack', I'd consider it a reliability feature.
> 
> Relays already check that their IPv4 ORPorts are working.
> 
> Doing reachability checks for relay IPv6 ORPorts is a bit more
> complicated, because we have to teach relays to extend over IPv6 first.
> 
> Here's the master ticket:
> https://trac.torproject.org/projects/tor/ticket/24403
> 
> And if relays use authority IPv6 ORPorts to upload descriptors, they
> will get connectivity checks for free:
> https://trac.torproject.org/projects/tor/ticket/24777

Good point (and I agree). I'll stopping opening a separate ticket for
this. Thanks!