2 External networks on 1 interface card

["Ryan White" <rwhite@collectivenet.net>]

I am not sure if it is possible but I wanted to check with some other people
first.

I am trying to use IP aliasing to address requests for 2 external networks.
I have a feeling that because of the way the routing is done I will have to
use 2 NICs with default gateways on each. I was reading info in the
net-howto about advanced routing but it was not very detailed. I could not
find any information to confirm or deny what I am trying to do. I assume it
has to do with the fact that default gateways are assigned as default to a
particular interface so having 2 would defeat the purpose.

Here is a diagram of what I'm trying to do.
---------------           ------------------
|  63.248.x.x |           |   65.13.x.x    |
|  Ext Net 1  |           |   Ext Net 2    |
---------------           ------------------
       |                           |
       |                           |
       |                           |
       |                           |
       -----------------------------
              |  Local Hub  |
              ---------------
                    |
                    |
                    |
            ------------------
            | Debian Machine |
            |     1 NIC      |
            ------------------

-Ryan