--- a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
@@ -195,6 +195,7 @@
 		phy-mode = "2500base-x";
 		sfp = <&sfp1>;
 		managed = "in-band-status";
+		openwrt,netdev-name = "sfp1";
 	};
 
 	mdio: mdio-bus {