diff --git a/target/linux/ramips/dts/mt7621_xiaomi_mir4.dts b/target/linux/ramips/dts/mt7621_xiaomi_mir4.dts
index 62b787c3a0..e72bbe8008 100644
--- a/target/linux/ramips/dts/mt7621_xiaomi_mir4.dts
+++ b/target/linux/ramips/dts/mt7621_xiaomi_mir4.dts
@@ -162,7 +162,27 @@
 };
 
 &gmac0 {
-	mtd-mac-address = <&factory 0xe000>;
+	mtd-mac-address = <&factory 0xe006>;
+};
+
+&switch0 {
+	ports {
+		port@1 {
+			status = "okay";
+			label = "lan1";
+		};
+
+		port@2 {
+			status = "okay";
+			label = "lan2";
+		};
+
+		port@4 {
+			status = "okay";
+			label = "wan";
+			mtd-mac-address = <&factory 0xe000>;
+		};
+	};
 };
 
 &state_default {
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index 16d0e389cf..43dfbd116f 100755
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -16,12 +16,12 @@ ramips_setup_interfaces()
 	lenovo,newifi-d1|\
 	mikrotik,routerboard-m33g|\
 	xiaomi,mir3g|\
-	xiaomi,mir3g-v2)
+	xiaomi,mir3g-v2|\
+	xiaomi,mir4)
 		ucidef_set_interfaces_lan_wan "lan1 lan2" "wan"
 		;;
 	gehua,ghl-r-001|\
 	hiwifi,hc5962|\
-	xiaomi,mir4|\
 	xiaomi,mir3p|\
 	xiaomi,mi-router-ac2100|\
 	xiaomi,redmi-router-ac2100)