cd /tmp
curl “http://downloads.sourceforge.net/project/e1000/igb%20stable/5.1.2/igb-5.1.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fe1000%2Ffiles%2Figb%2520stable%2F5.1.2%2Figb-5.1.2.tar.gz%2Fdownload&ts=1392823683&use_mirror=superb-dca2” [^]
tar xzvf igb-5.1.2.tar.gz -C /usr/local/src
cd /usr/local/src/igb-5.1.2/src
yum install kernel-devel
make install
rmmod igb; modprobe igb