On 12/19/16 07:52, balbea16 wrote:
Hi There, I assume, that this has been discussed here already pretty often. However, it
seems to be, that the "stable flag" is only assigned to relays with a static,
or at least long lasting, IP address. It also seems to be, that the stable flag is
mandatory to get the guard flag. If so, that would mean: Dynamic address = no chance to
obtain the guard flag. Is that the truth? Tnx Mike
Anyone interested in what each flag means may find the following section
of dir-spec.txt very helpful.
https://gitweb.torproject.org/torspec.git/tree/dir-spec.txt#n2207
Line 2207, or section 3.4.2 if the link doesn't jump to that line on
your device. Specifically for Stable, the following is written.
----
"Stable" -- A router is 'Stable' if it is active, and either its
Weighted MTBF is at least the median for known active routers or its
Weighted MTBF corresponds to at least 7 days. Routers are never called
Stable if they are running a version of Tor known to drop circuits
stupidly. (0.1.1.10-alpha through 0.1.1.16-rc are stupid this way.)
To calculate weighted MTBF, compute the weighted mean of the lengths
of all intervals when the router was observed to be up, weighting
intervals by $\alpha^n$, where $n$ is the amount of time that has
passed since the interval ended, and $\alpha$ is chosen so that
measurements over approximately one month old no longer influence the
weighted MTBF much.
----
Hope that helps.
Matt
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