ARP request/reply extrange behavior

[Diego Woitasen <diegows@linux.org.ar>]

Why the kernel answer ARP request when these enters by a different 
interface from which has the ip in question?

For example:

 lo:0 = 10.10.10.10
 eth0 = 10.10.10.11

If an ARP request for 10.10.10.10 arrive at eth0, the kernel send a 
reply, but this address is not attached to eth0.

Is this a bug or is intentional?

thanks.


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