It might be possible for your IT staff to fill in the gap with a DHCP server routing address.  You could bring this up with other department heads and get them on your side to gang up against the IT Department to bring this to a head.  Kind of like playing Politics.  If you emphasize the need for connectivity to the internet explaining it makes your company look like a mickey mouse organization, they may come on-board to your side.
			
			
				
		
			