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		 In your friend's defense, my cable modem actually has a router with DHCP server built into it.  In other words, a hub would be sufficent for me.  I still choose to use a router becuase it gets rid of the packet collision problem and because my router acts as a firewall.   But anyway, yeah, your friend might have the same modem where he can get away with using a simple hub. 
		
		
		
		
		
		
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