On Wed, 7 Aug 2013 19:42:07 -0400 Vincent Yu <v@xxxxxxxx> wrote: > On Wed, Aug 7, 2013 at 5:43 PM, Roman Mamedov <rm@xxxxxxxxxx> 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> Thanks. I really think this should be revisited, as IPv4 addresses are now becoming much more scarce, and on the other hand, 4-6-8 core CPUs are becoming commonplace. At least raising the limit to 3-4 relays per IP. -- With respect, Roman
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