final DataBroker dbx = session.getSALService(DataBroker.class);
nhManager = new NexthopManager(dbx);
vpnIfListener = new VpnInterfaceChangeListener(dbx, nhManager);
final DataBroker dbx = session.getSALService(DataBroker.class);
nhManager = new NexthopManager(dbx);
vpnIfListener = new VpnInterfaceChangeListener(dbx, nhManager);