diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index cf1abac5686..13515dd7ecf 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -532,11 +532,13 @@
 	eth_5: eth@10003000 {
 		compatible = "sandbox,eth";
 		reg = <0x10003000 0x1000>;
+		mac-address = [ 02 00 11 22 33 46 ];
 	};
 
 	eth_3: sbe5 {
 		compatible = "sandbox,eth";
 		reg = <0x10005000 0x1000>;
+		mac-address = [ 02 00 11 22 33 45 ];
 	};
 
 	eth@10004000 {
@@ -547,6 +549,7 @@
 	phy_eth0: phy-test-eth {
 		compatible = "sandbox,eth";
 		reg = <0x10007000 0x1000>;
+		mac-address = [ 02 00 11 22 33 49 ];
 		phy-handle = <&ethphy1>;
 		phy-mode = "2500base-x";
 	};
@@ -554,6 +557,7 @@
 	dsa_eth0: dsa-test-eth {
 		compatible = "sandbox,eth";
 		reg = <0x10006000 0x1000>;
+		mac-address = [ 02 00 11 22 33 48 ];
 	};
 
 	dsa-test {
diff --git a/board/sandbox/sandbox.env b/board/sandbox/sandbox.env
index 88ed7a96068..a2c19702d64 100644
--- a/board/sandbox/sandbox.env
+++ b/board/sandbox/sandbox.env
@@ -6,11 +6,7 @@ stdout=serial,vidconsole
 stderr=serial,vidconsole
 
 ethaddr=02:00:11:22:33:44
-eth3addr=02:00:11:22:33:45
-eth4addr=02:00:11:22:33:48
-eth5addr=02:00:11:22:33:46
 eth6addr=02:00:11:22:33:47
-eth8addr=02:00:11:22:33:49
 ipaddr=192.0.2.1
 
 /*