Implement networks routed through wesher

This adds an option for specifying a routed network. Every node route
that belongs to that routed network will be announced to the cluster and
every other node will direct traffic to that node for said route.

main.go

@@ -64,6 +64,7 @@ func main() {
 	}
 
 	// Main loop
+	routesc := common.Routes((*net.IPNet)(config.RoutedNet))
 	incomingSigs := make(chan os.Signal, 1)
 	signal.Notify(incomingSigs, syscall.SIGTERM, os.Interrupt)
 	logrus.Debug("waiting for cluster events")
@@ -82,7 +83,7 @@ func main() {
 				nodes = append(nodes, node)
 				hosts[node.OverlayAddr.IP.String()] = []string{node.Name}
 			}
-			if err := wgstate.SetUpInterface(nodes); err != nil {
+			if err := wgstate.SetUpInterface(nodes, (*net.IPNet)(config.RoutedNet)); err != nil {
 				logrus.WithError(err).Error("could not up interface")
 				wgstate.DownInterface()
 			}
@@ -91,6 +92,10 @@ func main() {
 					logrus.WithError(err).Error("could not write hosts entries")
 				}
 			}
+		case routes := <-routesc:
+			logrus.Info("announcing new routes...")
+			localNode.Routes = routes
+			cluster.Update(localNode)
 		case <-incomingSigs:
 			logrus.Info("terminating...")
 			cluster.Leave()