more memo

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1821 e5f2f494-b856-4b98-b285-d166d9295462

src/bin/xfrin/TODO

@@ -3,3 +3,4 @@
    occur at the same time.  (but testing it would be very difficult)
 3. It wouldn't support IPv6 because of the following line:
         self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
+4. Xfrin.retransfer and refresh share most of the code.  should be unified.