diff --git a/internal/netif/vxlan.go b/internal/netif/vxlan.go
index 6523f37..70740bc 100644
--- a/internal/netif/vxlan.go
+++ b/internal/netif/vxlan.go
@@ -4,7 +4,7 @@ import (
 	"github.com/vishvananda/netlink"
 )
 
-func CreateVxlan(name string, vxlanID int, localIface string) error {
+func CreateVxlan(name string, vxlanID int, localIface string, mtu int) error {
 	link, err := netlink.LinkByName(localIface)
 	if err != nil {
 		return err
@@ -12,6 +12,7 @@ func CreateVxlan(name string, vxlanID int, localIface string) error {
 	vxlan := &netlink.Vxlan{
 		LinkAttrs: netlink.LinkAttrs{
 			Name: name,
+			MTU:  mtu,
 		},
 		VxlanId:      vxlanID,
 		Port:         4789,
diff --git a/internal/subnet/create.go b/internal/subnet/create.go
index 1ed514e..d376d7f 100644
--- a/internal/subnet/create.go
+++ b/internal/subnet/create.go
@@ -86,7 +86,7 @@ func CreateSubnet(db *badger.DB, subnetName string) error {
 	}
 
 	// vxlan
-	if err := netif.CreateVxlan(vxlanIface, vxlanID, localIface); err != nil {
+	if err := netif.CreateVxlan(vxlanIface, vxlanID, localIface, 1500); err != nil {
 		return fmt.Errorf("create vxlan: %w", err)
 	}