I don't know what nslookup is.
nslookup is a command that takes the string style internet host name like www.google.com
asks a remote DNS server what the matching IP address is and returns it. It's more
common in Fedora to use the "host" or "dig" commands. If it were to fail it would probably help
diagnose your problem: either your gateway would be configured wrong.
My guess is your gateway is setup wrong, If you run
It should show a row that starts with "default" and then value right after that should be the host that you connect to the internet:
Run /sbin/route in a terminal on the working F-7 host and compare the results to the same command on the F10 machine,
they should be the same if you're on the same network.
This is mine, the important info is in bold (my router/gateway is called gate.isp.net in this example)
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 1 0 0 eth0
192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0
default gate.isp.net 0.0.0.0 UG 0 0 0 eth0