> As a simple example, if a server has two Ethernet cards connected to the
> same network configured as 10.0.0.1 and 10.0.0.2. From a client machine,
> say 10.0.0.3, pinging both server addresses seems to work, but looking at
> the ARP cache reveals that often one interface has responded to both ARP
> requests. More interesting, if one interface is brought down the other will
> continue to respond to ARP requests and any other network traffic for the
> downed adapters IP address.
Yes, this has been frustrating for me as well. Seems there is no way to
"umplumb" an interface in linux once it has been set up and many different
things besides just arp continue to "work" even after an interface is
taken down.
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