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 1204cbe83..5590dd9cb 100644
--- a/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
+++ b/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
@@ -73,7 +73,7 @@ local doh_validate = function(self, value, t)
 		for i = 1, #val do
 			local v = val[i]
 			if v then
-				if not datatypes.ipmask4(v) then
+				if not datatypes.ipmask4(v) and not datatypes.ipmask6(v) then
 					flag = 1
 				end
 			end
diff --git a/patch-luci-app-passwall.patch b/patch-luci-app-passwall.patch
index 2b7817d81..49c6a2719 100644
--- a/patch-luci-app-passwall.patch
+++ b/patch-luci-app-passwall.patch
@@ -24,7 +24,7 @@ index e52338c..7c71fff 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 89378ee..1204cbe 100644
+index ef406ad..5590dd9 100644
 --- a/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
 +++ b/luci-app-passwall/luasrc/model/cbi/passwall/client/global.lua
 @@ -332,6 +332,12 @@ o:value("9.9.9.9", "9.9.9.9 (Quad9-Recommended)")