[MacPorts] #47142: vpnc and openconnect support utun

[MacPorts]

#47142: vpnc and openconnect support utun
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 Reporter:  Mathias.Laurin+macports.org@…  |      Owner:  macports-
     Type:  defect                         |  tickets@…
 Priority:  Normal                         |     Status:  new
Component:  ports                          |  Milestone:
 Keywords:                                 |    Version:  2.3.3
                                           |       Port:
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 Since 10.9, OS X requires signed kernel drivers. In 10.9,
 loading unsigned kernel drivers would raise a deprecation
 warning; in 10.10, they are not loaded anymore. That means that
 the macports version of `tuntaposx` does not work.

 Apple provides "user tunnels" `utun` since OS X 10.6 that are
 implemented as sockets instead of character devices, rendering
 `tuntaposx` unnecessary.

 `https://github.com/breiter/vpnc` is a fork of vpnc with `utun`
 support and `utun` is supported in openconnect since  7.0 (and
 we now have 7.5 in the tree).

 More info and discussion on the vpnc patch
 [http://www.gossamer-threads.com/lists/vpnc/devel/4103]

 Attached is a portfile that sets vpnc to the breiter branch and
 removes the dependency on tuntaposx for vpnc and openconnect.

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Ticket URL: <https://trac.macports.org/ticket/47142>
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