diff --git a/internal/netns/create_linux.go b/internal/netns/create_linux.go
index 8eb9b65..51c739a 100644
--- a/internal/netns/create_linux.go
+++ b/internal/netns/create_linux.go
@@ -3,6 +3,7 @@
 package netns
 
 import (
+	"fmt"
 	"os"
 	"runtime"
 
@@ -20,6 +21,12 @@ func create(name string) error {
 		return err
 	}
 
+	// si le fichier existe déjà, le démonter d'abord
+	if _, err := os.Stat(path); err == nil {
+		unix.Unmount(path, unix.MNT_DETACH)
+		os.Remove(path)
+	}
+
 	// fichier cible
 	f, err := os.Create(path)
 	if err != nil {
@@ -39,9 +46,12 @@ func create(name string) error {
 		return err
 	}
 
-	// bind mount du netns courant vers /var/run/netns/<name>
+	// bind mount du netns du thread courant vers /var/run/netns/<name>
+	// /proc/self/ns/net pointe vers le ns du processus (thread principal),
+	// pas du thread courant — il faut utiliser le tid explicitement
+	threadNsPath := fmt.Sprintf("/proc/self/task/%d/ns/net", unix.Gettid())
 	if err := unix.Mount(
-		"/proc/self/ns/net",
+		threadNsPath,
 		path,
 		"",
 		unix.MS_BIND,
diff --git a/internal/vpc/create.go b/internal/vpc/create.go
index b0bf08a..a6e6aaa 100644
--- a/internal/vpc/create.go
+++ b/internal/vpc/create.go
@@ -47,7 +47,7 @@ func CreateVPC(db *badger.DB, name string) error {
 
 		// set set ext veth up
 		if err := netif.LinkSetUp("vp-" + name + "-e"); err != nil {
-			return nil
+			return err
 		}
 		// set set int veth up
 		if err := netns.Call(name, func() error {
diff --git a/internal/vpc/delete.go b/internal/vpc/delete.go
index a05e807..10c863d 100644
--- a/internal/vpc/delete.go
+++ b/internal/vpc/delete.go
@@ -12,7 +12,7 @@ func DeleteVPC(db *badger.DB, name string) error {
 	if state, err := kv.GetFromDB(db, "vpc/"+name+"/state"); err != nil {
 		return err
 	} else if state == "deleting" {
-		if err := netif.DeleteLink(name + "-ext"); err != nil {
+		if err := netif.DeleteLink("vp-" + name + "-e"); err != nil {
 			return err
 		}