I have 2 internet gateway (configuration as below) and a problem.
eth1 80.100.111.66 mask 255.255.255.240 gw 80.100.111.65
eth1:1 81.222.111.130 mask 255.255.255.224 gw 81.222.111.129
(the ip are not real, they are of example)
Some DNAT rules masq some servers on 80 class and other servers on 81 class.
The problem is that when primary default gw is 80.100.111.65, services on servers on 81.222.111.x don't work.
If i change gw order setting primary gw to 81.222.111.129, services on 81.222.111.x work, but services on 80.100.111.x stop to work.
I suppose the problem is that reply packets leave firewall correctly Natted but always routed to primary default gw. And if this gw is the wrong gw, it drops the packets because they aren't in his subnet.
How can i tell to ASL that traffic which is arrived on subnet 81.222.111.x MUST use 81.222.111.129 gw for reply packets, and so for other subnet.
I have tried Policy routing, but with unsuccess.
Best Regards
Fabrizio
Sorry for my bad English
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