[gentoo-user] ARP reply from wrong interface

[Sascha Hlusiak]

Hi list,

I have a server with two interfaces in the same subnet.

When asking for the MAC of one of the IPs, always both interfaces reply:

arping  -b xx.xx.xx.xx
ARPING xx.xx.xx.xx from yy.yy.yy.yy eth0
Unicast reply from xx.xx.xx.xx [00:1D:7D:D7:6D:F3]  0.607ms
Unicast reply from xx.xx.xx.xx [00:08:54:55:E7:02]  0.792ms

ip_forward is set to 0. Is there a switch in /proc to make Linux only reply 
from the interface that really owns the IP? Right now all traffic goes over 
one physical link, regardless of the target IP.


Thanks,
Sascha