diff --git a/src/Database/Persist/Net/Simple.hs b/src/Database/Persist/Net/Simple.hs
--- a/src/Database/Persist/Net/Simple.hs
+++ b/src/Database/Persist/Net/Simple.hs
@@ -1,7 +1,9 @@
  {-# LANGUAGE OverloadedStrings #-}
 
--- | This module provides orphan instances for data types
---   from the @ip@ package. These instances will choose the
+-- | This module provides orphan instances for the typeclasses
+--   'PersistField' and 'PersistFieldSql'. The instances provided
+--   are for the data types 'IPv4' and 'Mac' from the @ip@ package. 
+--   These instances will choose the 
 --   standard text type for the database column. If you are
 --   using PostgreSQL, you may want to consider importing 
 --   the @Database.Persist.Net.PostgreSQL@ module instead.
diff --git a/src/Web/PathPieces/Net.hs b/src/Web/PathPieces/Net.hs
new file mode 100644
--- /dev/null
+++ b/src/Web/PathPieces/Net.hs
@@ -0,0 +1,21 @@
+-- | This module provides orphan instances for 'PathPiece'
+--   for data types from the @ip@ package.
+
+module Web.PathPieces.Net where
+
+import Web.PathPieces (PathPiece(..))
+import Data.Text (Text)
+import Data.Monoid
+import Net.IPv4 (IPv4)
+import Net.Mac (Mac)
+import qualified Net.IPv4.Text as IPv4Text
+import qualified Net.Mac.Text as MacText
+
+instance PathPiece Mac where
+  toPathPiece   = MacText.encode
+  fromPathPiece = MacText.decode
+
+instance PathPiece IPv4 where
+  toPathPiece   = IPv4Text.encode
+  fromPathPiece = IPv4Text.decode
+
diff --git a/yesod-ip.cabal b/yesod-ip.cabal
--- a/yesod-ip.cabal
+++ b/yesod-ip.cabal
@@ -1,5 +1,5 @@
 name:                yesod-ip
-version:             0.3
+version:             0.4
 synopsis:            Code for using the ip package with yesod
 description:         Please see README.md
 homepage:            https://github.com/andrewthad/yesod-ip#readme
@@ -19,12 +19,14 @@
     Yesod.Form.Net
     Database.Persist.Net.Simple
     Database.Persist.Net.PostgreSQL
+    Web.PathPieces.Net
   build-depends:       
       base >= 4.7 && < 5
     , text
     , yesod-core
     , yesod-form
     , persistent
+    , path-pieces
     , ip   >= 0.6.0 && < 0.7.0
   default-language:    Haskell2010