On Sunday 27 August 2006 12:10, Holger Bauer wrote:
> Yes, you have to enable filtering bridge at system>advanced and need 3
> interfaces as you only can bridge OPTs to WAN. The LAN interface is not
> bridgeable. I have setups like this at several locations working fine.

Am I right in thinking that I need a transparent bridge for my task?

I have a set-top box that needs to access a special dhcp server that my cable 
company uses for digital tv(on the 10.170. subnet). The WAN is connected to 
the cable network and picks up a normal IP address (i.e. from the pool for 
PCs) but I need the STB to be able to send through its DHCP request 
__together with its MAC address (because the cable company uses MAC filtering 
on this server)__ transparently.

I can ping from the WAN to the STB DHCP server.

Simon