diff --git a/src/packages/fff/fff-layer3-config/Makefile b/src/packages/fff/fff-layer3-config/Makefile
index c993b0d..d9be826 100644
--- a/src/packages/fff/fff-layer3-config/Makefile
+++ b/src/packages/fff/fff-layer3-config/Makefile
@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=fff-layer3-config
-PKG_RELEASE:=4
+PKG_RELEASE:=5
 
 include $(INCLUDE_DIR)/package.mk
 
diff --git a/src/packages/fff/fff-layer3-config/files/etc/layer3.d/20-vlan b/src/packages/fff/fff-layer3-config/files/etc/layer3.d/20-vlan
index a46bcd5..2ace14f 100644
--- a/src/packages/fff/fff-layer3-config/files/etc/layer3.d/20-vlan
+++ b/src/packages/fff/fff-layer3-config/files/etc/layer3.d/20-vlan
@@ -16,7 +16,7 @@ configure() {
 		uci set network.$name='switch_vlan'
 		uci set network.$name.device="$(uci get network.$SWITCHDEV.name)"
 		uci set network.$name.vlan="$vlan"
-		uci set network.$name.ports="$CPUPORT $ports"
+		uci set network.$name.ports="$(get_cpu_port) $ports"
 	}
 
 	remove_vlan() {
diff --git a/src/packages/fff/fff-network/Makefile b/src/packages/fff/fff-network/Makefile
index 4f5b936..c97a816 100644
--- a/src/packages/fff/fff-network/Makefile
+++ b/src/packages/fff/fff-network/Makefile
@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=fff-network
-PKG_RELEASE:=30
+PKG_RELEASE:=31
 
 include $(INCLUDE_DIR)/package.mk
 
diff --git a/src/packages/fff/fff-network/files/lib/functions/fff/cpuport b/src/packages/fff/fff-network/files/lib/functions/fff/cpuport
index 39cccc9..dd5d4f2 100644
--- a/src/packages/fff/fff-network/files/lib/functions/fff/cpuport
+++ b/src/packages/fff/fff-network/files/lib/functions/fff/cpuport
@@ -1,38 +1,43 @@
 # Copyright 2019 Adrian Schmutzler
 # License GPLv3
 
-BOARD="$(uci get board.model.name)"
+get_cpu_port() {
+	local BOARD=$(uci get board.model.name)
+	local CPUPORT
 
-case "$BOARD" in
-	tplink,tl-wr1043nd-v1)
-		CPUPORT="5t"
-		;;
-	tplink,c50-v3|\
-	tplink,c50-v4|\
-	tplink,tl-wr1043nd-v2|\
-	tplink,tl-wr1043nd-v3|\
-	tl-wr841n-v13|\
-	r6220|\
-	ubnt-erx|\
-	ubnt-erx-sfp)
-		CPUPORT="6t"
-		;;
-	tplink,cpe210-v2|\
-	tplink,cpe210-v3|\
-	tplink,tl-mr3020-v1|\
-	tplink,tl-wa850re-v1|\
-	tplink,tl-wa860re-v1|\
-	tplink,tl-wa901nd-v2|\
-	ubnt,bullet-m|\
-	ubnt,nanostation-loco-m|\
-	ubnt,nanostation-loco-m-xw|\
-	ubnt,nanostation-m|\
-	ubnt,picostation-m|\
-	ubnt,unifi|\
-	ubnt,unifiac-mesh)
-		CPUPORT=""
-		;;
-	*)
-		CPUPORT="0t"
-		;;
-esac
+	case "$BOARD" in
+		tplink,c50-v3|\
+		tplink,c50-v4|\
+		tplink,tl-wr1043nd-v2|\
+		tplink,tl-wr1043nd-v3|\
+		tl-wr841n-v13|\
+		r6220|\
+		ubnt-erx|\
+		ubnt-erx-sfp)
+			CPUPORT="6t"
+			;;
+		tplink,cpe210-v2|\
+		tplink,cpe210-v3|\
+		tplink,tl-mr3020-v1|\
+		tplink,tl-wa850re-v1|\
+		tplink,tl-wa860re-v1|\
+		tplink,tl-wa901nd-v2|\
+		ubnt,bullet-m|\
+		ubnt,nanostation-loco-m|\
+		ubnt,nanostation-loco-m-xw|\
+		ubnt,nanostation-m|\
+		ubnt,picostation-m|\
+		ubnt,unifi|\
+		ubnt,unifiac-mesh)
+			CPUPORT=""
+			;;
+		tplink,tl-wr1043nd-v1)
+			CPUPORT="5t"
+			;;
+		*)
+			CPUPORT="0t"
+			;;
+	esac
+
+	echo "$CPUPORT"
+}