diff --git a/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua b/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
index 2b4c85371..23b8a290b 100644
--- a/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
+++ b/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
@@ -146,6 +146,11 @@ if (has_singbox or has_xray) and #nodes_table > 0 then
 			m:set(shunt_node_id, option, value)
 		end
 	end
+	local function get_remove(shunt_node_id, option)
+		return function(self, section)
+			m:del(shunt_node_id, option)
+		end
+	end
 	if #normal_list > 0 then
 		for k, v in pairs(shunt_list) do
 			local vid = v.id
@@ -197,6 +202,7 @@ if (has_singbox or has_xray) and #nodes_table > 0 then
 					o = s:taboption("Main", ListValue, node_option, string.format('* <a href="%s" target="_blank">%s</a>', api.url("shunt_rules", id), e.remarks))
 					o.cfgvalue = get_cfgvalue(v.id, id)
 					o.write = get_write(v.id, id)
+					o.remove = get_remove(v.id, id)
 					o:depends("tcp_node", v.id)
 					o:value("", translate("Close"))
 					o:value("_default", translate("Default"))
@@ -206,6 +212,7 @@ if (has_singbox or has_xray) and #nodes_table > 0 then
 					local pt = s:taboption("Main", ListValue, vid .. "-".. id .. "_proxy_tag", string.format('* <a style="color:red">%s</a>', e.remarks .. " " .. translate("Preproxy")))
 					pt.cfgvalue = get_cfgvalue(v.id, id .. "_proxy_tag")
 					pt.write = get_write(v.id, id .. "_proxy_tag")
+					pt.remove = get_remove(v.id, id .. "_proxy_tag")
 					pt:value("", translate("Close"))
 					pt:value("main", translate("Preproxy Node"))
 					for k1, v1 in pairs(socks_list) do
@@ -228,6 +235,7 @@ if (has_singbox or has_xray) and #nodes_table > 0 then
 			o = s:taboption("Main", ListValue, vid .. "-" .. id, string.format('* <a style="color:red">%s</a>', translate("Default")))
 			o.cfgvalue = get_cfgvalue(v.id, id)
 			o.write = get_write(v.id, id)
+			o.remove = get_remove(v.id, id)
 			o:depends("tcp_node", v.id)
 			o:value("_direct", translate("Direct Connection"))
 			o:value("_blackhole", translate("Blackhole"))
@@ -248,6 +256,7 @@ if (has_singbox or has_xray) and #nodes_table > 0 then
 			o = s:taboption("Main", ListValue, vid .. "-" .. id, string.format('* <a style="color:red">%s</a>', translate("Default Preproxy")), translate("When using, localhost will connect this node first and then use this node to connect the default node."))
 			o.cfgvalue = get_cfgvalue(v.id, id)
 			o.write = get_write(v.id, id)
+			o.remove = get_remove(v.id, id)
 			o:value("", translate("Close"))
 			o:value("main", translate("Preproxy Node"))
 			for k1, v1 in pairs(normal_list) do
diff --git a/luci-app-passwall/luasrc/passwall/util_sing-box.lua b/luci-app-passwall/luasrc/passwall/util_sing-box.lua
index 5affbcd44..4ce25bc90 100644
--- a/luci-app-passwall/luasrc/passwall/util_sing-box.lua
+++ b/luci-app-passwall/luasrc/passwall/util_sing-box.lua
@@ -959,7 +959,7 @@ function gen_config(var)
 					rule_outboundTag = "block"
 				elseif _node_id == "_default" and rule_name ~= "default" then
 					rule_outboundTag = "default"
-				elseif _node_id:find("Socks_") then
+				elseif _node_id and _node_id:find("Socks_") then
 					local socks_id = _node_id:sub(1 + #"Socks_")
 					local socks_node = uci:get_all(appname, socks_id) or nil
 					if socks_node then
diff --git a/luci-app-passwall/luasrc/passwall/util_xray.lua b/luci-app-passwall/luasrc/passwall/util_xray.lua
index b31a2cb62..57d392b4e 100644
--- a/luci-app-passwall/luasrc/passwall/util_xray.lua
+++ b/luci-app-passwall/luasrc/passwall/util_xray.lua
@@ -846,7 +846,7 @@ function gen_config(var)
 					return "blackhole", nil
 				elseif _node_id == "_default" then
 					return "default", nil
-				elseif _node_id:find("Socks_") then
+				elseif _node_id and _node_id:find("Socks_") then
 					local socks_id = _node_id:sub(1 + #"Socks_")
 					local socks_node = uci:get_all(appname, socks_id) or nil
 					local socks_tag
diff --git a/luci-app-passwall/root/usr/share/passwall/helper_dnsmasq.lua b/luci-app-passwall/root/usr/share/passwall/helper_dnsmasq.lua
index 40373ad68..18d01d14b 100644
--- a/luci-app-passwall/root/usr/share/passwall/helper_dnsmasq.lua
+++ b/luci-app-passwall/root/usr/share/passwall/helper_dnsmasq.lua
@@ -119,7 +119,6 @@ end
 
 function copy_instance(var)
 	local LISTEN_PORT = var["-LISTEN_PORT"]
-	local DNSMASQ_CONF = var["-DNSMASQ_CONF"]
 	local conf_lines = {}
 	local DEFAULT_DNSMASQ_CFGID = sys.exec("echo -n $(uci -q show dhcp.@dnsmasq[0] | awk 'NR==1 {split($0, conf, /[.=]/); print conf[2]}')")
 	for line in io.lines("/tmp/etc/dnsmasq.conf." .. DEFAULT_DNSMASQ_CFGID) do
@@ -135,7 +134,11 @@ function copy_instance(var)
 		end
 	end
 	tinsert(conf_lines, "port=" .. LISTEN_PORT)
+	if var["-return_table"] == "1" then
+		return conf_lines
+	end
 	if #conf_lines > 0 then
+		local DNSMASQ_CONF = var["-DNSMASQ_CONF"]
 		local conf_out = io.open(DNSMASQ_CONF, "a")
 		conf_out:write(table.concat(conf_lines, "\n"))
 		conf_out:close()
@@ -616,20 +619,7 @@ function add_rule(var)
 		local conf_lines = {}
 		if LISTEN_PORT then
 			--Copy dnsmasq instance
-			local DEFAULT_DNSMASQ_CFGID = sys.exec("echo -n $(uci -q show dhcp.@dnsmasq[0] | awk 'NR==1 {split($0, conf, /[.=]/); print conf[2]}')")
-			for line in io.lines("/tmp/etc/dnsmasq.conf." .. DEFAULT_DNSMASQ_CFGID) do
-				local filter
-				if line:find("passwall") then filter = true end
-				if line:find("ubus") then filter = true end
-				if line:find("dhcp") then filter = true end
-				if line:find("server=") == 1 then filter = true end
-				if line:find("port=") == 1 then filter = true end
-				if line:find("address=") == 1 or (line:find("server=") == 1 and line:find("/")) then filter = nil end
-				if not filter then
-					tinsert(conf_lines, line)
-				end
-			end
-			tinsert(conf_lines, "port=" .. LISTEN_PORT)
+			conf_lines = copy_instance({["-LISTEN_PORT"] = LISTEN_PORT, ["-return_table"] = "1"})
 		else
 			--Modify the default dnsmasq service
 		end
diff --git a/patch-luci-app-passwall.patch b/patch-luci-app-passwall.patch
index b7ae00f90..5b6d85b71 100644
--- a/patch-luci-app-passwall.patch
+++ b/patch-luci-app-passwall.patch
@@ -33,10 +33,10 @@ index 6851861..669a612 100644
  	if code ~= 0 then
  		local use_time = luci.sys.exec("echo -n '" .. result .. "' | awk -F ':' '{print $2}'")
 diff --git a/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua b/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
-index 7ea652a..2b4c853 100644
+index 958ff0a..23b8a29 100644
 --- a/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
 +++ b/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
-@@ -465,6 +465,12 @@ o:value("9.9.9.9", "9.9.9.9 (Quad9)")
+@@ -474,6 +474,12 @@ o:value("9.9.9.9", "9.9.9.9 (Quad9)")
  o:value("149.112.112.112", "149.112.112.112 (Quad9)")
  o:value("208.67.220.220", "208.67.220.220 (OpenDNS)")
  o:value("208.67.222.222", "208.67.222.222 (OpenDNS)")