[SOLVED] OEL5.4 OS, eth0 has private IP, eth0:0 has routable IP, internet access don't work
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Did you set the nameserver in /etc/resolv.conf ?
Can you ping the default gateway?
Usually, firefox should find its way out through the default gateway by itself.
Thanks for your quick reply. Below please see some notes:
1- Yes, I have /etc/resolv.conf pointing to correct name servers.
2- Yes, I'm able to ping the default gateway.
3- Just an added note: eth0:0 shows up under "ifconfig -a" command with correct parameters. I can ping eth0:0 using its IP. But, when I bring up "system-config-network", it doesn't have an entry for eth0:0.
4- The server was originally set up with private IP as its main IP. Do I need to change server's IP to this new rout-able one?
[QUOTE=matpe;3983880]I did try to set up a network config almost exactly as you have. This is what I did:
[CODE]# ifconfig eth0 10.0.0.1/24
# ifconfig eth0:0 220.127.116.11/24
# route add default gw 18.104.22.168
# route -n
matpe - Thanks so much for your useful post, but that only works dynamically. The real problem is that after a reboot it doesn't work anymore. Below please find how I've set up my network related files:
1- /etc/sysconfig/network ==> I populated "GATEWAY=" field with the gateway of my public address.
2- /etc/sysconfig/network-scripts/ifcfg-eth0 ==> I populated this file with my private IP information.
3- /etc/sysconfig/network-scripts/ifcfg-eth0:0 ==> I populated this file with my public IP information.
After a reboot I don't have internet access, when I issue ifconfig command don't see an entry for eth0:0, and my eth0 has the public IP assigned to it (although the file ifcfg-eth0 has my private IP info).
All, what am I doing wrong? How should these files be set up for everything to be configured right after a reboot?
This was a "user error". When configuring /etc/sysconfig/network-scripts/ifcfg-eth1:0 file for the public IP, I had forgotten to change the "DEVICE=" field to eth1:0. And since this was a cp of the /etc/sysconfig/network-scripts/ifcfg-eth1 file, it created a conflict. As soon as I corrected this file, everything worked just fine.