diff --git a/frontend/udp/frontend.go b/frontend/udp/frontend.go
index bc5b421..5831213 100644
--- a/frontend/udp/frontend.go
+++ b/frontend/udp/frontend.go
@@ -84,8 +84,13 @@ func NewFrontend(logic frontend.TrackerLogic, cfg Config) (*Frontend, error) {
 		},
 	}
 
+	err := f.listen()
+	if err != nil {
+		return nil, err
+	}
+
 	go func() {
-		if err := f.listenAndServe(); err != nil {
+		if err := f.serve(); err != nil {
 			log.Fatal("failed while serving udp", log.Err(err))
 		}
 	}()
@@ -112,19 +117,18 @@ func (t *Frontend) Stop() stop.Result {
 	return c.Result()
 }
 
-// listenAndServe blocks while listening and serving UDP BitTorrent requests
-// until Stop() is called or an error is returned.
-func (t *Frontend) listenAndServe() error {
+func (t *Frontend) listen() error {
 	udpAddr, err := net.ResolveUDPAddr("udp", t.Addr)
 	if err != nil {
 		return err
 	}
-
 	t.socket, err = net.ListenUDP("udp", udpAddr)
-	if err != nil {
-		return err
-	}
+	return err
+}
 
+// listenAndServe blocks while listening and serving UDP BitTorrent requests
+// until Stop() is called or an error is returned.
+func (t *Frontend) serve() error {
 	pool := bytepool.New(2048)
 
 	t.wg.Add(1)