[tor-relays] Questions about relays on IPv6

[teor]

Hi,

> On 19 Jun 2019, at 05:56, tschador at posteo.de wrote:
> 
> I have enabled IPv6 on my Relay [1] and setup a new one [2].
> Both got the additional Flag 'ReachableIPv6' - fine.
> 
> In the 'IPv6 HOWTO' [3] I found:
> 
> "Since clients only use the ORPort (because it's more anonymous2), and
> relays only use IPv4, there is no reason to configure an IPv6 DirPort -
> if you do, it will never be used."
> 
> Hmm - 'relays only use IPv4' seems to be true. Until now I can see only
> incoming connections from the authorities; no other IPv6 and no outgoing
> IPv6 connection while on [1] there are over 6800 und on [2] over 4800
> IPv4 connections!
> 
> So I wonder: Does it make sense to setup IPv6 non-exit relays when IPv6
> is not used? Or must I wait patiently - how long?

If your relay becomes a Guard, a small number of clients will use its IPv6
ORPort.

We want to use IPv6 more in tor, but we have to write the code to do it,
and work out if it has any anonymity issues.

I updated the wiki page so it is clearer:
https://trac.torproject.org/projects/tor/wiki/doc/IPv6RelayHowto?action=diff&version=13

> [1] 6A7551EEE18F78A9813096E82BF84F740D32B911 (Tormachine)
> [2] 9556D34D97C0382E8B9901B036ACAA2F2B453FEC (Tormachine2)
> [3] https://trac.torproject.org/projects/tor/wiki/doc/IPv6RelayHowto

T

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