Share iPhone Personal Hotspot with Mac, then share Internet via ethernet When I'm travelling I only have Internet via my iPhone, which I can share to my Mac via Personal Hotspot just fine. However, I have a VoIP desk phone which only gets internet via ethernet cabling.  I have tried plugging the phone directly in to my Mac, and then turning on Internet Sharing to share the connection from Wi-Fi to the ethernet ports.  But the phone does not pick up any connection.  Is this possible and how can it be done?
Not a networking expert, but I tried using a switch in between the Mac and the VoIP phone, and it worked! No idea why the VoIP phone wouldn't work when plugging directly in to the Mac, but oh well - very happy!