We study the symmetric degrees-of-freedom (DoF)
of partially connected interference networks under linear coding
strategies without channel state information at the transmitters
beyond topology. We assume that the receivers are equipped
with reconfigurable antennas that can switch among their preset
modes. In such a network setting, we characterize the class
of network topologies in which half linear symmetric DoF is
achievable. Moreover, we derive two general upper bounds on
the linear symmetric DoF for arbitrary network topologies. We
also demonstrate the tightness of our bounds for the class of
network topologies in which all the transmitters in the network
have at most two co-interferers.