[tor-bugs] #28593 [Core Tor/Tor]: On macOS/iOS, experiment with SystemConfiguration.framework to get a list of network interfaces

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#28593: On macOS/iOS, experiment with SystemConfiguration.framework to get a list
of network interfaces
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     Reporter:  rl1987        |      Owner:  (none)
         Type:  enhancement   |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  macos ios
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 To get a list of network interfaces, we use platform-specific API
 (`GetAdaptersAddresses()`) on Windows and `getifaddrs()` on Unix/Linux if
 possible. Failing that, Tor can also call `ioctl()`.

 On Darwin, there's a platform API to get and enumerate network interfaces.

 See:
 https://developer.apple.com/documentation/systemconfiguration/1517296-scnetworkinterfacegetinterface?language=objc

 We should experiment with that and decide if we want to use it as a
 primary way to get network interfaces on macOS/iOS.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28593>
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