Answer Posted / bhupendra singh jhala

follow following command

1.) vi /etc/sysctl.conf

# Controls IP packet forwarding
net.ipv4.ip_forward = 1

save (:wq!)

You should have a Two physical LAN card, if You have't two
Lan cat. You have to creat virtual Lan card

2.) cp -arvf /etc/sysconfig/network-scripts/ifcfg-
eth0 /etc/sysconfig/network-scripts/ifcfg-eth0:1

3.) Set a diffrent Class IP in virtual Lan card

4.) start network service
/etc/init.d/network restart

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