Add note about the availability of contrib/mac for the macaddr data type.

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 183cd11e19ff784dd882fbce3539fb0ab5c86148..10d6304cc11ec8f6cb32bc10c632bd50c2e2d803 100644 (file)
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -1,5 +1,5 @@
 
 
  
@@ -1967,6 +1967,13 @@ January 8 04:05:06 1999 PST
      a through f.  Output is always in the
      latter of the given forms.
     
+
+    
+     The directory contrib/mac
+     in the Postgres source distribution
+     contains tools that can be used to map MAC addresses to hardware
+     manufacturer names.
+