Hopefully, this helps some people quickly shortcut to a solution instead of putzing around for a couple hours wondering “Why, O Why?”. If you install Fedora 16 with a minimal install, like I recently did, you will find out that while you can maybe ping your local systems, you cannot get out on the net.
Apparently, “minimal installation” to Fedora seems to really mean barest of bones. This is actually an old annoyance. The key issue seems to be that the network configuration script is either missing or badly formatted. In my case, Anaconda asked me for some eth0 settings, and I supplied a static IP on the local 192.168.x.x LAN, which worked fine to pull necessary packages during install. However, the resultant ifcfg-eth0 was incorrect:
[root@registeel ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 HWADDR="6A:27:C0:31:4A:B0" DOMAIN="mcs.local" IPV6INIT="no" UUID="5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03" IPADDR0="192.168.1.115" DNS1="192.168.1.100" PREFIX0="24" DEFROUTE="yes" IPV4_FAILURE_FATAL="yes" NM_CONTROLLED="yes" BOOTPROTO="none" GATEWAY0="192.168.1.1" DEVICE="eth0" TYPE="Ethernet" ONBOOT="yes" NAME="eth0"
The issue is all the trailing zeros on two of the keys, IPADDR0 and GATEWAY0. Just remove the trailing zeros, then restart the network service or reboot, and all should be well.