(代替其他机器做地址翻译工作)
proxy ARP
The technique in which one {host}, usually a {router}, answers
{Address Resolution Protocol} (ARP) requests intended for
another machine. By "faking" its identity, the router accepts
responsibility for routing packets to the "real" destination.
Proxy ARP allows a site to use a single {IP address} with two
physical networks. {Subnet}ting would normally be a better
solution.