A few days ago I installed an Oracle VM virtual machine on the Windows 7 system, opened today to see incredibly can not use the bridge mode, their own careful observation, is not caused by the network driver, add the driver can be.
1. Error message
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Workaround (Add driver to local network Places)
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Select the network driver under the Oracle VM installation directory
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Problem solved.
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This article from "Together Through the Days" blog, declined reprint!
The Linux system cannot use bridging mode on virtual machines