diff --git a/decompressed/gui_file/usr/share/transformer/scripts/check_wan.sh b/decompressed/gui_file/usr/share/transformer/scripts/check_wan.sh
index 9b9bcb68..0cf8d54f 100755
--- a/decompressed/gui_file/usr/share/transformer/scripts/check_wan.sh
+++ b/decompressed/gui_file/usr/share/transformer/scripts/check_wan.sh
@@ -23,18 +23,21 @@ check_wan() {
 }
 
 set_sfp() {
-	if [ $sfp_wanlan_mode == "1" ]; then
+
+    #this is to forcely use network.sfp otherwise /usr/sbin/sfp_get.sh will use network.sfptag that is managed by nothing
+    [ "$(uci get -q network.sfptag)" ] && uci delete network.sfptag
+
+	if [ "$sfp_wanlan_mode" = "0" ]; then
 		if [ ! "$(uci get -q network.lan.ifname | grep eth4)" ]; then
 			uci set network.lan.ifname='eth0 eth1 eth2 eth3 eth4 eth5'
-			uci set network.sfptag.ifname=''
 			uci commit
 			/etc/init.d/network restart
 			/etc/init.d/ethernet reload
 		fi
 	else
-		if [ ! "$(uci get -q network.sfptag.ifname | grep eth4)" ]; then
+		if [ ! "$(uci get -q network.sfp.ifname | grep eth4)" ]; then
 			uci set network.lan.ifname='eth0 eth1 eth2 eth3 eth5'
-			uci set network.sfptag.ifname='eth4'
+			uci set network.sfp.ifname='eth4'
 			uci commit
 			/etc/init.d/network restart
 			/etc/init.d/ethernet reload
@@ -42,9 +45,9 @@ set_sfp() {
 	fi
 }
 
-if [ $(uci get -q env.rip.sfp) ]; then
-	if [ $sfp_presence == "0" ]; then
-		if [ $(uci get -q ethernet.eth4.wan) ] ; then
+if [ "$(uci get -q env.rip.sfp)" ]; then
+	if [ "$sfp_presence" = "0" ]; then
+		if [ "$(uci get -q ethernet.eth4.wan)" ] ; then
 			check_wan
 		fi
 	else
diff --git a/decompressed/gui_file/www/docroot/modals/ethernet-modal.lp b/decompressed/gui_file/www/docroot/modals/ethernet-modal.lp
index d6e926fb..bfb1b823 100644
--- a/decompressed/gui_file/www/docroot/modals/ethernet-modal.lp
+++ b/decompressed/gui_file/www/docroot/modals/ethernet-modal.lp
@@ -537,13 +537,9 @@ end
 local mapParSFP = {}
 local mapValSFP = {}
 
-local sfpintf = "sfptag"
+local sfpintf = "sfp"
 
 if sfp_presence and  (sfp_presence[1].value == "1") then
-    --if sfptag interface not found change name to sfp (fastweb naming)
-    if not proxy.get("uci.network.interface.@"..sfpintf..".ipaddr")  then
-        sfpintf = "sfp"
-    end
     mapParSFP.ethsfp = "uci.ethernet.globals.eth4lanwanmode"
     mapValSFP.ethsfp = vB
 else
@@ -671,9 +667,9 @@ end
 local function validateLeaseTime(value, postdata, key)
 	-- Check every possibile value...
 	-- One tip NEVER EVER MAKE USER INSERT WORD FOR A INT VALUE... INT DON'T FUC*ING HAVE UPPER OR LOWER CHAR -.-
-   if value == '-1' or 
-	 value == "infinite" or 
-	 value == timhelper.ethtrans().eth_infinit or 
+   if value == '-1' or
+	 value == "infinite" or
+	 value == timhelper.ethtrans().eth_infinit or
 	 value:sub(1,1):upper()..value:sub(2) == timhelper.ethtrans().eth_infinit or
 	 value:sub(1,1):lower()..value:sub(2) == timhelper.ethtrans().eth_infinit	 then -- included '-1' as a feasible set value as specified in TR 181
       postdata[key] = "infinite" -- included to ensure uci parameter is set as infinite
@@ -1428,4 +1424,4 @@ $("#btn-dhcp-reset").on("click", function(){\
 </script>\
 \
 ');  ngx.print(ui_helper.createFooter())   ngx.print('\
-'); 
+');