You can do that using the arp(8) command

 # arp -s 10.0.0.2 00:90:27:bb:cc:dd permanent

take a look at the man page of the command

I hope this can Help !

On Wed, Oct 28, 2009 at 5:29 PM, Andres Salazar <ndrsslz...@gmail.com>wrote:

> Hello,
>
> I Have dhcp enabled on my LAN which assigns an IP according to the
> clients MAC address, however if a user wanted to be malicious he can
> statically assign any IP to his NIC.
>
> Isnt there anyway I can force my ARP tables to only allow IPs to be
> assigned if the MAC address matches?
>
>
> Thanks
> Andres

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