Unpacking quantum-server (from .../quantum-server_2012.2+git201207190101~quantal-0ubuntu1_all.deb) ...
dpkg: error processing /var/cache/apt/archives/quantum-server_2012.2+git201207190101~quantal-0ubuntu1_all.deb (--unpack):
trying to overwrite '/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini', which is also in package quantum-plugin-openvswitch 2012.2+git201207190101~quantal-0ubuntu1
Unpacking quantum-server (from .../quantum- server_ 2012.2+ git201207190101 ~quantal- 0ubuntu1_ all.deb) ... apt/archives/ quantum- server_ 2012.2+ git201207190101 ~quantal- 0ubuntu1_ all.deb (--unpack): plugins/ openvswitch/ ovs_quantum_ plugin. ini', which is also in package quantum- plugin- openvswitch 2012.2+ git201207190101 ~quantal- 0ubuntu1
dpkg: error processing /var/cache/
trying to overwrite '/etc/quantum/