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Re: Lost all network connectivity after clean FC3 install

Salvatore Indiogine wrote:
Hi Jay!

Thanks to your help I am making progress on my
networking problems.

1. Now I have internet connectivity by adding the GW
to the eth0-DHCP configuration.

2. Now I also can bring up the LAN side on eth1 by
removing the GW from the settings and using ip address and mask.

3. I have a Fedora PC connected to eth1 using a
crossover cable. Before I had internet connectivity
with the following settings on the client PC (adjusted
for new network schema):

GW: (= eth1 on PC connected to cable

DNS: same entries as on PC connected to cable modem.

Then I adjust /proc/sys/net/ipv4/ip_forward and also
modify /etc/sysctl.conf so that I do not have to echo
to proc after each reboot.

Then I type (as root) on the PC connected to the cable

iptables --table nat --append POSTROUTING
--out-interface eth0 -j MASQUERADE
iptables --append FORWARD --in-interface eth1 -j

So, when I still was at FC1 it worked like a charm. Now as FC3 the following happens at the client PC

1. ping, OK works!
2. ping the IP number of either of the DNS servers, OK
3. ping the charter.net GW, OK works!
4. ping a non-IP, thus requiring DNS name resolution
e.g. ping www.cnn.com, the I get:

www.cnn.com unknown host. So for some reason I do not
get DNS to resolve host names even though everything
else now works.

/etc/resolv.conf is the same now on and

What is the "hosts" entry in /etc/nsswitch.conf on the client PC?

Try the "dig" tool to diagnose DNS problems on the client (part of the bind-utils package):

$ dig @ www.cnn.com

Does this work?


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