On 2007-05-22, Grant Taylor <gtaylor@xxxxxxxxxxxxxxxxx> wrote: > On 05/22/07 13:36, Pascal Hambourg wrote: >> I'm curious : why is a bridge needed for this ? Doesn't a simple router >> do the job as well ? > > No. > > Let me re-layout the network including IP addresses. > > (INet [A.B.C.Z]) --- (BRouter [A.B.C.D]) --- ([A.B.C.E] Server(s) > [192.168.144.254] --- ([192.168.144.1-100]) > > Here you can see that you have the same subnet of A.B.C.x on both sides > of the bridging router. There is no good (read easy) way to have the > same subnet on multiple sides of a router short of double natting which > in and of its self is not easy to do on a singular box. > > So what you do is bridge the A.B.C.x traffic to both networks and route > the other subnet(s) as needed. > Or you switch on arp proxy on the public interface of router ;) -- Petr
