Longtime listener, first-time caller here.
I've been up and down this forum looking for the answer to why I can't connect my PS3 to my iMac via ethernet from the Mac itself.
The issue seems to be that unlike the wireless connection directly to the router (which has UPnP enabled, of course), UPnP is not enabled with the wired connection to the Mac. Every other connection seems to be working swell. The PS3 when connected via ethernet will get online just fine but because for some reason UPnP is not enabled, it won't find the Media Server.
I want to stress that the PS3 is not having trouble connecting to the internet via the ethernet connected to the Mac. It's doing so fine. It's just that it won't enable UPnP whereas it will when wireless.
My Mac Firewall is off, all IP addresses seem to be finding themselves just swell (don't even have to force them as per other posts) - Is there a reason why when wired, connected through ethernet to the Mac, UPnP is not enabled on the PS3?