I have the Lightning to USB 3 Camera Adapter, and I use it to plug the Apple Ethernet tu USB adapter to get internet. It works with all my other iPhones and iPads: iPhone 5s, SE, iPad Mini 3, iPad 4. But, when I try it with the Ethernet adapter on my iPhone 6 Plus, it doesn't work. Also, in the case of the iPhone 6 Plus, the power MUST be fed from the wall plug (instead of from the iMac with my other devices), otherwise, the 6 Plus wouldn't charge up. Have you tried getting wired internet with a 6 Plus?