diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 ## dprox
 
 [![CircleCI](https://circleci.com/gh/bjin/dprox.svg?style=shield)](https://circleci.com/gh/bjin/dprox)
+[![CirrusCI](https://api.cirrus-ci.com/github/bjin/dprox.svg)](https://cirrus-ci.com/github/bjin/dprox)
 [![Depends](https://img.shields.io/hackage-deps/v/dprox.svg)](https://packdeps.haskellers.com/feed?needle=dprox)
 [![Release](https://img.shields.io/github/release/bjin/dprox.svg)](https://github.com/bjin/dprox/releases)
 [![Hackage](https://img.shields.io/hackage/v/dprox.svg)](https://hackage.haskell.org/package/dprox)
diff --git a/dprox.cabal b/dprox.cabal
--- a/dprox.cabal
+++ b/dprox.cabal
@@ -1,11 +1,11 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.35.1.
+-- This file has been generated from package.yaml by hpack version 0.35.2.
 --
 -- see: https://github.com/sol/hpack
 
 name:           dprox
-version:        0.4.1
+version:        0.4.2
 synopsis:       a lightweight DNS proxy server, compatible with dnsmasq-china-list
 description:    Please see the README on GitHub at <https://github.com/bjin/dprox#readme>
 category:       DNS
diff --git a/src/DomainRoute.hs b/src/DomainRoute.hs
--- a/src/DomainRoute.hs
+++ b/src/DomainRoute.hs
@@ -10,7 +10,6 @@
   ) where
 
 import Data.ByteString.Char8 qualified as BS
-import Data.Char             (toLower)
 import Data.Trie             qualified as T
 import Data.Trie.Convenience qualified as T
 import Network.DNS           qualified as DNS
@@ -20,8 +19,8 @@
 
 normalize :: DNS.Domain -> BS.ByteString
 normalize d
-    | BS.null d = BS.empty
-    | otherwise = BS.reverse (BS.cons '.' (BS.map toLower d))
+    | BS.null d = BS.singleton '.'
+    | otherwise = BS.reverse (BS.cons '.' (DNS.normalize d))
 
 newDomainRoute :: (a -> a -> a) -> [(DNS.Domain, a)] -> DomainRoute a
 newDomainRoute merge ds = DomainRoute (T.fromListWithL' merge ds')
diff --git a/src/Main.hs b/src/Main.hs
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -197,6 +197,7 @@
                       ]
 
     logger INFO $ "read " <> toLogStr (length server) <> " server configs"
+    logger INFO $ "read " <> toLogStr (length address) <> " address configs"
     logger INFO $ "read " <> toLogStr (length hosts) <> " hosts configs"
     logger INFO $ "read " <> toLogStr (length bogusnx) <> " bogus-nxdomain configs"
     logger INFO $ "read " <> toLogStr (length ipset) <> " ipset configs"