[ale] how to do 'gratituous ARP broadcast'

[Joseph A. Knapka]

"Jerry Z. Yu" wrote:
> 
> anybody has done a 'gratituous ARP broadcast' from a Linux box?
> 
> /sbin/arp doesnot seem to be it?
> I am replacing a production box with a new one with the different NIC
> (aka, different MAC addr). I want to let the gateway machine see the
> the new MAC right away instead of waiting for ARP cache timeout on the
> gateway machine.
> 
> thanks.
> 
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You could also use "arp -d <hostname>" to flush the new machine's
address from the
arp cache on the gateway; it would then re-request the MAC address next
time it
had to talk to that machine.

-- Joe

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