diff --git a/internal/net/gphttp/middleware/cloudflare_real_ip.go b/internal/net/gphttp/middleware/cloudflare_real_ip.go
index 4fdcf2e..19314d6 100644
--- a/internal/net/gphttp/middleware/cloudflare_real_ip.go
+++ b/internal/net/gphttp/middleware/cloudflare_real_ip.go
@@ -17,8 +17,7 @@ import (
 )
 
 type cloudflareRealIP struct {
-	realIP    realIP
-	Recursive bool
+	realIP realIP
 }
 
 const (
@@ -47,7 +46,7 @@ var CloudflareRealIP = NewMiddleware[cloudflareRealIP]()
 func (cri *cloudflareRealIP) setup() {
 	cri.realIP.RealIPOpts = RealIPOpts{
 		Header:    "CF-Connecting-IP",
-		Recursive: cri.Recursive,
+		Recursive: true,
 	}
 }
 
diff --git a/internal/net/gphttp/middleware/middlewares.go b/internal/net/gphttp/middleware/middlewares.go
index 184de94..a59cda2 100644
--- a/internal/net/gphttp/middleware/middlewares.go
+++ b/internal/net/gphttp/middleware/middlewares.go
@@ -35,8 +35,8 @@ var allMiddlewares = map[string]*Middleware{
 }
 
 var (
-	ErrUnknownMiddleware    = gperr.New("unknown middleware")
-	ErrDuplicatedMiddleware = gperr.New("duplicated middleware")
+	ErrUnknownMiddleware       = gperr.New("unknown middleware")
+	ErrMiddlewareAlreadyExists = gperr.New("middleware with the same name already exists")
 )
 
 func Get(name string) (*Middleware, Error) {
@@ -69,7 +69,7 @@ func LoadComposeFiles() {
 		for name, m := range mws {
 			name = strutils.ToLowerNoSnake(name)
 			if _, ok := allMiddlewares[name]; ok {
-				errs.Add(ErrDuplicatedMiddleware.Subject(name))
+				errs.Add(ErrMiddlewareAlreadyExists.Subject(name))
 				continue
 			}
 			allMiddlewares[name] = m
diff --git a/internal/route/provider/docker.go b/internal/route/provider/docker.go
index 0483bbb..67c995a 100755
--- a/internal/route/provider/docker.go
+++ b/internal/route/provider/docker.go
@@ -80,8 +80,11 @@ func (p *DockerProvider) loadRoutesImpl() (route.Routes, gperr.Error) {
 			errs.Add(err.Subject(container.ContainerName))
 		}
 		for k, v := range newEntries {
-			if routes.Contains(k) {
-				errs.Addf("duplicated alias %s", k)
+			if conflict, ok := routes[k]; ok {
+				errs.Add(gperr.Multiline().
+					Addf("route with alias %s already exists", k).
+					Addf("container %s", container.ContainerName).
+					Addf("conflicting container %s", conflict.Container.ContainerName))
 			} else {
 				routes[k] = v
 			}