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                             — 
                            Network Discovery 3.0.0 and later 
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                             Network Discovery 3.0.0 and later are only
                                supported on PAN-OS 12.x and later. If you are running an older
                                version of PAN-OS, 
                                uninstall Network Discovery 2.x or earlier prior
                                to upgrading to PAN-OS 12.x. After upgrading to PAN-OS 12.x, you
                                can install Network Discovery 3.0.0 and later.
                             
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                             Network Discovery 3.0.0 and later are only
                                supported on PAN-OS 12.x and later. If you want to downgrade
                                to Network Discovery 2.x.x or earlier, you need
                                to uninstall Network Discovery, downgrade to
                                a supported version of PAN-OS, and then install the
                                Network Discovery version 2.x or earlier that you
                                want to use.
                             
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