I have the same problem as bug # 0004981, now marked fixed. I don't know how to reopen the bug; sorry.<br />
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I installed CentOS 6.2 x86_64 on a computer whose NIC was not detected (1969:2062). After installation and rebooting, I installed an appropriate driver (kmod-atl1e from elrepo). However, the file /etc/sysconfig/network was not present, and therefore the network daemon and NetworkManager didn't start even after the NIC was detected.
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