> >so only hosts entered in /etc/ethers will get data from host.
> >
> >
> ifconfig interfaceN -arp
>
> But I don't think that /etc/ethers doesn't do what you think; you have to
> use the arp command to create the entries you need.
arp -f /etc/ethers

but

i did ifconfig le0 -arp

ping 10.20.30.33 (nonexisting in arp table)

and found:

? (10.20.30.33) at (incomplete) on le0

in arp table.

so looks it doesn't work...