Open socket on OSPF Stub interfaces

Hi, Is there a way of turning off the socket listen for OSPF interfaces marked as 'stub'? At the moment I'm running up against the 1024 open file limit on servers (such as VM hosts) with lots of interfaces. I could alter the ulimit but it seems a bit of a waste to have all those open sockets doing nothing. Could the code be altered to open the socket if the interface is reconfigured away from being a stub, or is there another reason for the listen being there on stub interfaces? Rgs Neil