But if you giving eth0 IP addresses on two different subnets then you could just plug everything that's on eth1 onto the same network as eth0. Just because it's Linux doesn't mean you can redefine IP routing and expect it to work. -----Original Message----- From: netfilter-bounces@xxxxxxxxxxxxxxxxxxx [mailto:netfilter-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Hervé Sent: Wednesday, February 02, 2005 8:41 AM To: netfilter Subject: Re: Two NICS with same IP and same client IP > Hervé wrote: >> >> In my case, the point is to help the routing by modifying the source >> address. For example, you give eth0 two addresses: 192.168.100.1 and >> 192.168.101.1, and eth1: 192.168.100.1 (yes, the same) and >> 192.168.102.1. > > what's the point ??? > I have two identical test benches, in which one box has a fixed IP address, hence I can't change the subnets. What is more, this box always accesses the same IP address for the server. Yeah, not so easy, but hey, it's Linux, so it's possible! Cheers, Hervé.