pptp tunnel

I am creating a pptp tunnel with bcp between a rb750 and a rb493. ether1 is my gateway on both routers. Ether3 is setup for a private network and ether4 is setup as a public network. I want to create the bridge for my private network only. the rb493 is the server and the rb750 is the client. I would assume I create the bridge on ether3 but the tutorial on the wiki is using the gateway(ether1). I just want to some clarification.

What tutorial are you follow and what exactly are you trying to achieve?

Here is a link to the tutorial I was following. http://wiki.mikrotik.com/wiki/Manual:BCP_bridging_(PPP_tunnel_bridging) I want to connect two offices and make it look like they are both on the same network. The thing is that there are two networks on both of these routers. A public network for guest and a private corporate network. I only want the private network to connect to each other. So, ether1 will be the gateway. Ether3 is the private network connecting both offices. Ether5 is the public network.

I prefer EoIP :wink:

http://wiki.mikrotik.com/wiki/Transparently_Bridge_two_Networks_without_using_WDS_(EoIP)