(ARP fraud attacks will not only cause network instability, causing users to be unable to access the Internet, or enterprises may be disconnected from the Internet, resulting in serious production accidents, and the use of ARP fraud attacks can further implement man-in-the-middle attacks to illegally obtain game, online banking, file services and other systems. Accounts and passwords constitute a serious loss of interests to the attackers. Therefore, ARP fraud attack is a very bad network attack behavior.)