On Wed, Aug 7, 2013 at 5:43 PM, Roman Mamedov <r...@romanrm.ru> wrote:

> While we are on this topic, is there a limit on the number of nodes per IP
> address? I have two nodes running on one IP (different ports), tried
> adding a
> third one, but it can't seem to be able to register:


There is a limit of two relays per IP. From the directory
specification<https://gitweb.torproject.org/torspec.git/blob/HEAD:/dir-spec.txt>
(line
1773): "Authorities SHOULD 'disable' any relays in excess of 2 on any
single IP." This limit was implemented in 2007 as a countermeasure to Sybil
attacks<https://gitweb.torproject.org/torspec.git/blob/HEAD:/proposals/109-no-sharing-ips.txt>
.

Vincent
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