Linux has been doing so for ages.
> 20:27:00.175626 arp who-has donald tell sugar
> 20:27:00.175626 arp reply donald is-at 0:0:21:50:21:6c
If you use tcpdump -e, you will see that this is a refreshment "arp":
it is directed ONLY at the 0:0:21:50:21:6c card. If it fails to reach
an answer, it will be retried as a broadcast. This means that all other
machines won't be bothered with this. It's in the spec.
-- If it's there and you can see it, it's REAL |___R.E.Wolff@BitWizard.nl | If it's there and you can't see it, it's TRANSPARENT | Tel: +31-15-2137555 | If it's not there and you can see it, it's VIRTUAL |__FAX:_+31-15-2138217 | If it's not there and you can't see it, it's GONE! -- Roy Wilks, 1983 |_____|
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