Since Yosemite, my early 2009 (2x2.26) MP won't connect to the internet after waking from sleep. I've tried switching the ethernet cable between 1 and 2 which doesn't work. I've tried rebuilding the ports through the system prefs by removing then adding the ethernet ports. The only way it will connect is to restart the computer. I saw a thread someplace else about the same issue but there was no fix. Any thoughts?