I don’t know how to do this, or even if it can be done.
I’ve an RB532 connecting a wireless network to an adsl modem by ethernet.
I need to connect a local PC to the Internet with pppoe for AAA, but there are no free ethernet ports on the 532.
I can connect the PC to the 532 via the modem, but can’t see how to set up a PPPoE tunnel between them as the PC (or at least the pppoe client interface) must be on the same network as the modem and the 532: ie
modem: 192.168.1.1/24
RB532 192.168.1.2/24
PC-pppoe 192.168.1.3/24
RB532-pppoe 192.168.1.4/24
If you put the pppoe interfaces on any other sub-net the modem will treat it as 0.0.0.0/0 and route it out of the public interface. Won’t it?
There is a static-routing facility on the modem. If I put the pppoe interfaces on a 192.168.2.0/24 network and static-routed that out of 192.168.1.1 would the pppoe tunnel from the PC through the modem to the 532, and then be returned as Internet traffic through the modem with a masqueraded 192.168.1.2 IP address? And the replies dst-natted back to 192.168.2.1 (the PC’s pppoe interface) through the modem?
This is where by brain loses its grip on reality and starts singing La Marseillaise in a loud voice with its face to the wall. Rescue would be much appreciated.