[tor-bugs] #16161 [Tor]: Tor dies on reload when swichting to 'DisableNetwork 0' when using 'DnsPort 127.0.0.1:53'

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#16161: Tor dies on reload when swichting to 'DisableNetwork 0' when using 'DnsPort
127.0.0.1:53'
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     Reporter:  proper  |      Owner:
         Type:  defect  |     Status:  new
     Priority:  normal  |  Milestone:
    Component:  Tor     |    Version:  Tor: 0.2.5.12
   Resolution:          |   Keywords:
Actual Points:          |  Parent ID:
       Points:          |
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Comment (by yawning):

 Replying to [comment:3 proper]:
 > The intuitively correct behavior that I would suggest is.
 >
 > > We close (and don’t reattempt) any outbound connections. Controllers
 sometimes use this option to avoid using the network until Tor is fully
 configured.
 >
 > Not opening listen ports should be a different option. If that is needed
 at all?
 >
 > My suggestion: when {{{DisableNetwork 1}}} is set,
 >
 > * open all ports as usual,
 > * prevent any outgoing connections and
 > * when receiving requests on these ports, just reply "network down" or
 something like that.
 >
 > What do you think?

 I'm not against having an option to get the behavior that you want, but
 the principle of least surprise would suggest that `DisableNetwork` should
 indeed disable networking, which includes not binding to ports (I would
 expect a not-otherwise firewalled tor instance running with
 `DisabledNetwork` to respond to a `SYN` with an immediate `RST`).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16161#comment:4>
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