You need to setup "Policy routing", where the routing is carried
out based on more than just the destination address - in your case
you need it to be based on the source address (which will be either the
address of either eth0 or the address of eth1).
http://www.compendium.com.ar/policy-routing.txt has some info, but it's
a bit sketchy - there may be better stuff elsewhere. Plus of course
you need to turn this on in your kernel (2.1.something or higher required)
Scott.
On Mon, Apr 10, 2000 at 08:29:38PM +1000, Rodos wrote:
> I have a problem with TCP/IP that I don't know how to solve.
>
> I have ISDN and cable. One machine has a static IP address on one
> network card (eth0) and a dynamic IP on another (eth1), which is the
> cable address.
>
> When a packet comes in on eth0 (from ISDN), the reply goes out eth1
> (cable) as thats the default route. If the return address is on the
> local subnet it works fine, because there is a static route for that
> range onto eth0.
>
> What I want to do is get it so that packets are returned on the
> interface they come in on.
>
> Any idea what I can do?
>
> Thanks heaps.
>
> Rodos
>
> --
> If the box says "Windows 95 or better", it should run on Linux, right?
> - anon
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