add RFC reference

diff --git a/dns/rdtypes/ANY/SPF.py b/dns/rdtypes/ANY/SPF.py
index 79a11274a3a6d0d963b3713127b18c04c78656f6..d038f4404285ee46d2b8c4a433c64f3de344b9df 100644 (file)
--- a/dns/rdtypes/ANY/SPF.py
+++ b/dns/rdtypes/ANY/SPF.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2003-2006 Nominum, Inc.
+# Copyright (C) 2006 Nominum, Inc.
 #
 # Permission to use, copy, modify, and distribute this software and its
 # documentation for any purpose with or without fee is hereby granted,
@@ -16,5 +16,7 @@
 import dns.rdtypes.txtbase
 
 class SPF(dns.rdtypes.txtbase.TXTBase):
-    """SPF record"""
+    """SPF record
+
+    @see: RFC 4408"""
     pass