BUG: 2 NICs on same network
Quoted 10 lines · Frank Louwers
Our situation is this: we have a server with 2 nics, each with a different IP on the same network, connected to the same switch. Let's assume eth0 has ip 1.2.3.1 and eth1 has 1.2.3.2, with a both with a netmask of 255.255.255.0.
Now the strange thing is that traffic for 1.2.3.2 arrives at eth0 no matter what!
Even if we disconnect the cable for eth1, 1.2.3.2 still replies to pings, ssh, web, ...
Do:
netstat -rn
and you will (should?) understand why.
See:/usr/src/linux/Documentation/networking/bonding.txt
to (possibly) achieve what you want..
Dag B