It often is caused by the invalid MTU setting. When the PC is connected to the router with Ethernet cable, the MTU setting may block the transferring. Please try to change the MTU to smaller size, such as 1420 and restart the ethernet network.

For how to set the proper MTU size, please refer to this link: https://www.sevenforums.com/tutorials/94721-mtu-limit-test-change-your-connections-mtu-limit.html The destination for Ping is the ip address of CamFi Pro device, not google.com

Sorry, Lightroom does not support tethering with Sony cameras yet.
You can use CamFi native app tethering with Sony cameras. And set the hot folder of Lightroom as same as the download folder of CamFi app.

	CamFi Pro Plus	CamFi Pro
Support Camera	Canon，Nikon，Sony，Fujifilm，Pentax，Olympus，Panasonic, etc. Camera List	Canon, Nikon, Sony Camera List
Support Software	Capture One, Lightroom, Camera's native app, CamFi native software	CamFi native software