[xubuntu] Wifi Sharing with Network Manager - Works for a bit then stops

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http://ubuntuforums.org – Hi there, As the title suggests I am sharing a Wifi connection from my netbook (Xubuntu 13.04) to my Desktop (Xubuntu 13.04) over ethernet. I have been using the network manager to do this, setting the "Shared to other computers" option. And it works, for a bit. I use firefox to browse, search something random in google, and it works, then something else and.... nothing. No indication of disconnect, Dmesg says link active, and so does network manager. I can still use the network on the netbook at the same time, no issues. When it 'hangs' i attempt to ping the router, and nothi (Hardware)