On my dad's Mac mini I want to create a WiFi network so I can use my iPad/iPhone when I'm at his house. His Mac mini is connected by ethernet cable. Steps below: 1) System Preferences>Network>click on Wi-Fi>click Turn Wi-Fi On tab> Create Network... 2) Says "Wi-Fi has a self assigned IP address 16.xxx.xxx.xxx and will not be able to connect to the Internet" (Internet Sharing:On). Doing this completely kills the Internet connection. Even if I turn off Wi-Fi I must reboot the Mac to get the Ethernet to connect. What am I doing wrong? I have an older Linksys Router/Wi-Fi hooked up and this works. Just trying to remove it if unnecessary.