[tor-bugs] #20085 [Core Tor/Tor]: Tor fails to start if RelayBandwidthRate < 75 KB/s despite torrc stating minimum is 20 KB/s

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#20085: Tor fails to start if RelayBandwidthRate < 75 KB/s despite torrc stating
minimum is 20 KB/s
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     Reporter:  rchaves       |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:  Tor: 0.2.8.7
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 Tor fails to start if RelayBandwidthRate < 75 KB/s despite stated minimum
 in just above where this value is set in /etc/tor/torrc:

 ## Define these to limit how much relayed traffic you will allow. Your
 ## own traffic is still unthrottled. Note that RelayBandwidthRate must
 ## be at least 20 kilobytes per second.

 and on some web documentation (General Tor FAQ,
 https://www.torproject.org/docs/faq.html.en#BandwidthShaping):

 "The minimum BandwidthRate setting is 20 kilobytes per second."

 Excerpt from /var/log/syslog:

 [warn] Failed to parse/validate config: RelayBandwidthRate is set to 20480
 bytes/second. For servers, it must be at least 76800.
 [err] Reading config failed--see warnings above.
 systemd[1]: tor at default.service: control process exited, code=exited
 status=1
 systemd[1]: Failed to start Anonymizing overlay network for TCP.
 systemd[1]: Unit tor at default.service entered failed state.

 Tor starts properly when RelayBandwidthRate >= 75 KB/s.

 Suggest changing recommendation in default torrc file comments and on web
 rather than lowering minimum allowed RelayBandwidthRate.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20085>
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