minor: correction to replica set

Author: Sam Kleinman

source/tutorial/deploy-replica-set.txt

@@ -69,13 +69,6 @@ ports, you can select different ports. See the documentation of the
 following options for more information: :option:`--port <mongod --port>`,
 :option:`--dbpath <mongod --dbpath>`, and :option:`--replSet <mongod --replSet>`.
 
-.. note::
-
-   If you're running each :program:`mongod` instance on a distinct
-   system, you can omit the :option:`--port <mongod --port>`
-   option. You will also need to specify the :option:`--bind_ip
-   <mongod --bind_ip>` option.
-
 Connect to the :program:`mongod` instance with the :program:`mongo`
 shell to the first host. If you're running this command remotely,
 replace "localhost" with the appropriate hostname. In a new shell
@@ -163,7 +156,10 @@ Use the following configuration for each MongoDB instance.
 
    replSet = rs0
 
-Modify the :setting:`bind_ip` to reflect a secure interface on
+You do not need to specify an interface with
+:setting:`bind_ip`. However, if you do not specify an interface,
+MongoDB will listen for connections on all available IPv4
+interfaces. Modify :setting:`bind_ip` to reflect a secure interface on
 your system that will be able to access all other members of the set
 *and* on which all other members of the replica set can access the
 current node. The DNS or host names need to point and resolve to this