“arping - send ARP REQUEST to a neighbour host“
格式：
arping [ -AbDfhqUV] [ -c count] [ -w deadline] [ -s source] -I interface destination-U Unsolicited ARP mode to update neighbours’ ARP caches. No replies are expected.
关键命令：
arping -U -I 发送包的网卡接口 -s 源ip 目的ip
实例：
假设你的eth0接口对应的ip为192.168.100.11,网关为192.168.100.2你就可以使用
arping -U -I eth0 -s 192.168.100.11 192.168.100.2
