Do you have the appropriate aliases for eth1 and eth2 in /etc/modprobe.conf?
alias eth1 tulip alias eth2 tulip
Yes - all four NICs have entries:
alias eth0 tulip alias eth1 tulip alias eth2 tulip alias eth3 sk98lin
Any other ideas why eth1 and eth2 don't load properly ?
What messages appear in /var/log/messages when the tulip module is loaded?
The router should have a separate IP address for each interface, in the IP address range for the segment it is on.
That sparked a lot of discussion in another place, with people agreeing with you and others disagreeing. While some agree that you are right in principle, others say that they have running systems that seem to work quite satisfactorily.
My principle concern is that the machine that is bridging these segments needs to be known by only one IP address across the whole LAN and that there is only one DNS on the network, and which is not on this machine but on the segment that links to the Internet.
In your original email, you said:
"I have four network cards in an FC2 machine. This machine is supposed to act as a system router between different segments of a LAN, some of which is Windows, most of which is Linux, some 10baseT and some 100baseT"
If your machine is to act as a router, you're splitting your LAN into separate subnets and your router will need an IP address in each subnet. Now you're saying it's a bridge, which is an entirely different thing, effectively "glueing" the separate networks into one. You don't need multiple IP addresses for a bridge (you don't actually need *any*).
Try http://bridge.sourceforge.net/howto.html for more details on bridging.
Paul.
