urn:opendaylight:params:xml:ns:yang:vpnservice:impl?module=vpnservice-impl&revision=2015-02-16 urn:opendaylight:params:xml:ns:yang:controller:md:sal:binding?module=opendaylight-md-sal-binding&revision=2013-10-28 prefix:vpnservice-impl vpnservice-default binding:binding-broker-osgi-registry binding-osgi-broker