DSR 설정방법

loopback adapter 생성
# vi /etc/sysconfig/network-scripts/ifcfg-lo:0
TYPE=Ethernet
 DEVICE=lo:0
 BOOTPROTO=none
 ONBOOT=yes
 IPADDR=Virtual IP
 NETMASK=255.255.255.255

패킷포워딩 기능 (0: disable, 1: enable)
# vi /etc/sysctl.conf
net.ipv4.ip_forward = 0

ARP브로드캐스트 이슈해결
# vi /etc/sysctl.conf
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.lo.arp_ignore = 1
net.ipv4.conf.lo.arp_announce = 2

적용
# ifup lo:0 또는 ifconfig lo:0 Virtual IP netmask 255.255.255.255
# sysctl -p