diff --git a/box.go b/box.go
index 8132e462..5a6e3d55 100644
--- a/box.go
+++ b/box.go
@@ -203,21 +203,23 @@ func (s *Box) Start() error {
 
 func (s *Box) preStart() error {
 	for serviceName, service := range s.preServices {
+		s.logger.Trace("pre-start ", serviceName)
 		err := adapter.PreStart(service)
 		if err != nil {
-			return E.Cause(err, "pre-start ", serviceName)
+			return E.Cause(err, "pre-starting ", serviceName)
 		}
 	}
 	for i, out := range s.outbounds {
+		var tag string
+		if out.Tag() == "" {
+			tag = F.ToString(i)
+		} else {
+			tag = out.Tag()
+		}
 		if starter, isStarter := out.(common.Starter); isStarter {
+			s.logger.Trace("initializing outbound/", out.Type(), "[", tag, "]")
 			err := starter.Start()
 			if err != nil {
-				var tag string
-				if out.Tag() == "" {
-					tag = F.ToString(i)
-				} else {
-					tag = out.Tag()
-				}
 				return E.Cause(err, "initialize outbound/", out.Type(), "[", tag, "]")
 			}
 		}
@@ -231,24 +233,27 @@ func (s *Box) start() error {
 		return err
 	}
 	for serviceName, service := range s.preServices {
+		s.logger.Trace("starting ", serviceName)
 		err = service.Start()
 		if err != nil {
 			return E.Cause(err, "start ", serviceName)
 		}
 	}
 	for i, in := range s.inbounds {
+		var tag string
+		if in.Tag() == "" {
+			tag = F.ToString(i)
+		} else {
+			tag = in.Tag()
+		}
+		s.logger.Trace("initializing inbound/", in.Type(), "[", tag, "]")
 		err = in.Start()
 		if err != nil {
-			var tag string
-			if in.Tag() == "" {
-				tag = F.ToString(i)
-			} else {
-				tag = in.Tag()
-			}
 			return E.Cause(err, "initialize inbound/", in.Type(), "[", tag, "]")
 		}
 	}
 	for serviceName, service := range s.postServices {
+		s.logger.Trace("starting ", service)
 		err = service.Start()
 		if err != nil {
 			return E.Cause(err, "start ", serviceName)
@@ -266,30 +271,36 @@ func (s *Box) Close() error {
 	}
 	var errors error
 	for serviceName, service := range s.postServices {
+		s.logger.Trace("closing ", serviceName)
 		errors = E.Append(errors, service.Close(), func(err error) error {
 			return E.Cause(err, "close ", serviceName)
 		})
 	}
 	for i, in := range s.inbounds {
+		s.logger.Trace("closing inbound/", in.Type(), "[", i, "]")
 		errors = E.Append(errors, in.Close(), func(err error) error {
 			return E.Cause(err, "close inbound/", in.Type(), "[", i, "]")
 		})
 	}
 	for i, out := range s.outbounds {
+		s.logger.Trace("closing outbound/", out.Type(), "[", i, "]")
 		errors = E.Append(errors, common.Close(out), func(err error) error {
 			return E.Cause(err, "close outbound/", out.Type(), "[", i, "]")
 		})
 	}
+	s.logger.Trace("closing router")
 	if err := common.Close(s.router); err != nil {
 		errors = E.Append(errors, err, func(err error) error {
 			return E.Cause(err, "close router")
 		})
 	}
 	for serviceName, service := range s.preServices {
+		s.logger.Trace("closing ", serviceName)
 		errors = E.Append(errors, service.Close(), func(err error) error {
 			return E.Cause(err, "close ", serviceName)
 		})
 	}
+	s.logger.Trace("closing log factory")
 	if err := common.Close(s.logFactory); err != nil {
 		errors = E.Append(errors, err, func(err error) error {
 			return E.Cause(err, "close log factory")
diff --git a/route/router.go b/route/router.go
index 6dbb1922..380ec5e5 100644
--- a/route/router.go
+++ b/route/router.go
@@ -489,31 +489,56 @@ func (r *Router) Start() error {
 }
 
 func (r *Router) Close() error {
-	for _, rule := range r.rules {
-		err := rule.Close()
-		if err != nil {
-			return err
-		}
+	var err error
+	for i, rule := range r.rules {
+		r.logger.Trace("closing rule[", i, "]")
+		err = E.Append(err, rule.Close(), func(err error) error {
+			return E.Cause(err, "close rule[", i, "]")
+		})
 	}
-	for _, rule := range r.dnsRules {
-		err := rule.Close()
-		if err != nil {
-			return err
-		}
+	for i, rule := range r.dnsRules {
+		r.logger.Trace("closing dns rule[", i, "]")
+		err = E.Append(err, rule.Close(), func(err error) error {
+			return E.Cause(err, "close dns rule[", i, "]")
+		})
 	}
-	for _, transport := range r.transports {
-		err := transport.Close()
-		if err != nil {
-			return err
-		}
+	for i, transport := range r.transports {
+		r.logger.Trace("closing transport[", i, "] ")
+		err = E.Append(err, transport.Close(), func(err error) error {
+			return E.Cause(err, "close dns transport[", i, "]")
+		})
 	}
-	return common.Close(
-		common.PtrOrNil(r.geoIPReader),
-		r.interfaceMonitor,
-		r.networkMonitor,
-		r.packageManager,
-		r.timeService,
-	)
+	if r.geositeReader != nil {
+		r.logger.Trace("closing geoip reader")
+		err = E.Append(err, common.Close(r.geoIPReader), func(err error) error {
+			return E.Cause(err, "close geoip reader")
+		})
+	}
+	if r.interfaceMonitor != nil {
+		r.logger.Trace("closing interface monitor")
+		err = E.Append(err, r.interfaceMonitor.Close(), func(err error) error {
+			return E.Cause(err, "close interface monitor")
+		})
+	}
+	if r.networkMonitor != nil {
+		r.logger.Trace("closing network monitor")
+		err = E.Append(err, r.networkMonitor.Close(), func(err error) error {
+			return E.Cause(err, "close network monitor")
+		})
+	}
+	if r.packageManager != nil {
+		r.logger.Trace("closing package manager")
+		err = E.Append(err, r.packageManager.Close(), func(err error) error {
+			return E.Cause(err, "close package manager")
+		})
+	}
+	if r.timeService != nil {
+		r.logger.Trace("closing time service")
+		err = E.Append(err, r.timeService.Close(), func(err error) error {
+			return E.Cause(err, "close time service")
+		})
+	}
+	return err
 }
 
 func (r *Router) GeoIPReader() *geoip.Reader {