#!/usr/bin/bash

VIP=192.168.96.200
NETMASK=32

case $1 in
start)
    ip addr add dev lo $VIP/$NETMASK
    echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore  #忽略arp广播
    echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce #匹配精确ip地址回包
    ;;
stop)
    ip addr del dev lo $VIP/$NETMASK
    echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
    echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
    ;;
*)
    echo "Usage: $0 {start|stop}"
    ;;
esac