[Bug 195606] New: Serial ports under emulators/virtualbox-ose do not works

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195606

            Bug ID: 195606
           Summary: Serial ports under emulators/virtualbox-ose do not
                    works
           Product: Ports Tree
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: vbox at FreeBSD.org
          Reporter: 214748mv at gmail.com
          Assignee: vbox at FreeBSD.org
             Flags: maintainer-feedback?(vbox at FreeBSD.org)

I have tried to use a host device, /dev/cuau0, in a Windows VM as COM1 but with
no luck. Probably the bug is “It is almost like the CTS pin is permanently
active but the actual device is not really ready for data.” as mentioned by
Anthony Takata in this mail:
https://lists.freebsd.org/pipermail/freebsd-emulation/2014-October/011927.html
. 
I have solved the problem via network as explayned here:
https://lists.freebsd.org/pipermail/freebsd-emulation/2014-December/012066.html
. 
This approach has a main disadvantage: the VM can not be suspended because when
resumed lost the connection with the host TCP socket.

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