[tor-relays] No stable flag from 6 out of 9?

[Ole Rydahl]

> -----Oprindelig meddelelse-----
> Fra: tor-relays [mailto:tor-relays-bounces at lists.torproject.org] På vegne
af
> Sebastian Hahn
> Sendt: 15. april 2018 20:54
> Til: tor-relays at lists.torproject.org
> Emne: Re: [tor-relays] No stable flag from 6 out of 9?
> 
> Hi,
> 
> > On 15. Apr 2018, at 20:20, Ole Rydahl <ole_rydahl at qp12.dk> wrote:
> > It's my experience that announcing ipv6 capability and actually not
> > providing - results in not being part of the cached consensus since
> > only 3 authorities acknowledge your relay as running.
> >
> > My situation was different all 9 directory authorities acknowledge my
> > relay as running, but initially only 3 granted me the stable flag.
> >
> > Vasilis suggested an experiment where I stopped announcing
> > ipv6-support a while ago. As a follow up - after I had obtained the
> > stable flag from all 9 directory authorities - Vasilis suggested that I
re-
> enabled ipv6 capability.
> 
> I read the thread, I think what's happened is that your ipv6 connection is
> intermittently flaky, not down all the time. That means dirauths with v6
note
> many more failures than those without it and that causes them to have a
much
> worse availability history for you.
> 
> Cheers
> Sebastian

Hi Sebastian,

You are probably right, but I assume, the relay would lose cached consensus
- for a period - in case of lost ipv6 connectivity? 

Nothing in the log however indicates that. Neither before I disabled ipv6
nor after I re-enabled it. For other purposes, I ping6 Google every 5
minutes and send a mail to myself in case of no reply. 2 occasions during
the last 2 month on March 6th (for 50 minutes) and April 10th (for 1 hour).
The later one happened while my ipv6 capability was unannounced (Vasilis'
suggestion).

Anyway the traffic is flowing nicely now - as it did even before the stable
flag was granted. I suggest we consider the problem solved.

Regards Ole
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