Subject: Split WAN access.
From: Dark Nebula <x03ml@sgene.org>
Date: Sun, 08 Jun 2008 15:13:14 +0100

Hallo list!

I have a little problem here.
I have a host, that have 2 interfaces. In eth0 (10.10.10.0/24) i have 
two different gateways 10.10.10.254/24 and 10.10.10.253/24.
The 10.10.10.254 is the host default gateway to one isp (connected to eth1).
The 10.10.10.253 is a redundant gateway (connected to a lan client eth0 
via wireless).

So, my problem is, how can i setup my host to allow the guest to use the 
10.10.10.253 as gateway and not 10.10.10.254.
I have the guest, connected to eth0 and as a 10.10.10.10 ip.

The draw must illustrate the scenario:


 [WLAN] <----- [10.10.10.253]   <----  [guest 10.10.10.10/24]
                                                                         |
[LAN 10.10.10.0/24] ---------------------------- [eth0 HOST] [eth1 HOST] 
-----> [ISP]
                                                             
(10.10.10.254)(Dynamic IP)

At this moment i have this kernel routing table is the host:
# netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt 
Iface
83.144.142.0    0.0.0.0         255.255.255.0   U         0 0          0 
eth1
10.10.10.0      0.0.0.0         255.255.255.0   U         0 0          0 
eth0
0.0.0.0         83.144.142.254  0.0.0.0         UG        0 0          0 
eth1


I hope this is explicit, if yes, can someone help me please?

Thanks a lot for your patience.