Has anybody ever tried to apply Bridge NAT rules to a bridge that has a BCP-transport PPP interface as a member of it? In my initial tests, it seems as though traffic being sent out any real ethernet interface is getting “MAC-NATted” appropriately, but any of the traffic sent down the PPP BCP interface hits the router on the other side untouched (original MAC addresses still show up). This seems to be true for the ‘srcnat’ chain as well as the ‘dstnat’ chain (trying to use the latter to craft a custom proxy-ARP response on the router doing the bridging).
– Nathan