[lug] NIC loses static IP config on reboot

[David Anselmi]

Tim Stephenson wrote:
> Dave,
> I checked as suggested.
> When reboot and NIC is down ifconfig eth0 shows

> Link encap:Ethernet Hwaddr 00:40:XX:XX:XX:XX:XX
> UP Broadcast Multicast MTU 1500 Metric 1
> RX Packets:851 errors: 0 dropped: 0 overruns:0 frame: 0
> TX Packets: 19 errors: 0 dropped: 0 overruns:0 frame: 0
> Collisions: 0 txqueuelen: 100

No surprise there, no IP address but it looks like you've got the right 
driver and the cable is plugged in...

> It shows same for eth1 except packet quantity - no errors
> 
> When I enter ifup eth0
> I get
> Determining IP info for eth0 - failed
> Ping 10.0.0.1
> Doesn't get response

Are those last two lines output of ifup, or something else you tried?

> We then put the machine on another network and booted. It pulled down a DHCP
> address and was able to ping other boxes on the network.

So it looks like your card is using DHCP.  I did some looking and found 
that one system I have is using:

/etc/sysconfig/networking/profiles/default/ifcfg-eth0

rather than:

/etc/sysconfig/network-scripts/ifcfg-eth0

The former is used the the RH "network administration tool" according to 
the docs.  I don't use that and somehow both config files on my system 
are the same.  But maybe you need to check both of them.

BTW, if you want to see what /etc/sysconfig/network-scripts/ifup is 
doing, you can add a "set -x" line at the top of it and it will show you 
just what files it uses.  Look just below the line that says 
"need_config eth0".

HTH,
Dave