--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -80,7 +80,9 @@
 	xiaomi,mi-router-4|\
 	xiaomi,mi-router-4a-gigabit|\
 	xiaomi,mi-router-4a-gigabit-v2)
-		ucidef_set_interfaces_lan_wan "lan1 lan2" "wan"
+		ucidef_set_interfaces_lan_wan "lan2" "wan"
+		ucidef_set_interface "dtdlink" device "lan1.2" protocol "static"
+		ucidef_set_interface "wifi" device "wlan0" protocol "static"
 		;;
 	bolt,arion)
 		ucidef_set_interfaces_lan_wan "lan" "wan"