On freeBSD server(gateway, DDNS, DHCP), I use "arp -s IP MAC_Address pub" to protect some important computers from steeling IP. But someone else in Network can do this: ping IP, then arp -a, he can know MAC_address of an inportant computer, then he changes his own MAC_address, and then steels IP.
How to hide MAC_Address?
I'm sorry for my not good English!
How to hide MAC_Address?
I'm sorry for my not good English!