diff --git a/target/linux/ramips/dts/mt7621_edimax_rx21s.dtsi b/target/linux/ramips/dts/mt7621_edimax_rx21s.dtsi
index 8e7652cac7..3a235070bf 100644
--- a/target/linux/ramips/dts/mt7621_edimax_rx21s.dtsi
+++ b/target/linux/ramips/dts/mt7621_edimax_rx21s.dtsi
@@ -78,6 +78,13 @@
 				label = "u-boot-env";
 				reg = <0x30000 0x10000>;
 				read-only;
+
+				nvmem-layout {
+					compatible = "u-boot,env";
+
+					macaddr_uboot_ethaddr: ethaddr {
+					};
+				};
 			};
 
 			partition@40000 {
@@ -160,21 +167,33 @@
 		port@1 {
 			status = "okay";
 			label = "lan4";
+
+			nvmem-cells = <&macaddr_uboot_ethaddr>;
+			nvmem-cell-names = "mac-address";
 		};
 
 		port@2 {
 			status = "okay";
 			label = "lan3";
+
+			nvmem-cells = <&macaddr_uboot_ethaddr>;
+			nvmem-cell-names = "mac-address";
 		};
 
 		port@3 {
 			status = "okay";
 			label = "lan2";
+
+			nvmem-cells = <&macaddr_uboot_ethaddr>;
+			nvmem-cell-names = "mac-address";
 		};
 
 		port@4 {
 			status = "okay";
 			label = "lan1";
+
+			nvmem-cells = <&macaddr_uboot_ethaddr>;
+			nvmem-cell-names = "mac-address";
 		};
 	};
 };
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 c6e440b8e9..c16196e1c0 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -261,7 +261,6 @@ ramips_setup_macs()
 		;;
 	edimax,ra21s|\
 	edimax,rg21s)
-		lan_mac=$(mtd_get_mac_ascii u-boot-env ethaddr)
 		wan_mac=$(mtd_get_mac_ascii u-boot-env wanaddr)
 		;;
 	elecom,wrc-2533ghbk2-t|\