[tor-bugs] #25390 [Core Tor/Tor]: Tor browser fails when external tor instance is configured

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#25390: Tor browser fails when external tor instance is configured
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     Reporter:  Zedfour       |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 I have configured Tor browser to use an independent Tor instance in my
 local network by changing the SOCKS5 proxy. Problem is, if there is such
 instance configured in Tor browser's Network settings, the startup will
 fail next time, since the included instance can not start listening on an
 interface that does not exist on the local machine.

 Also, if I want to do the same with an instance running on the local
 machine, the included instance will also fail to start due to port
 conflict. Is there a correct way to do this?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25390>
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