On one of our development systems the Internet quit working after a power failure and a reboot. We suspect that that a new kernel was downloaded by Yum and never took effect till a reboot occurred sometime later. History: We know that the realtech driver for chip set RTL 8111/8168B works with SL 5.4 -> 5.10. The problem is with SL 6.1 - 6.5. Same box same hardware.
A long time ago we installed a special kernel from ELRepo.org to fix the problem with SL 6.4. SL 6.4 later was updated to SL 6.5 and still no Ethernet - ifconfig shows that it can receive but not transmit as before. Would it be appropriate to reinstall the kernel-lt-3.10.32-1.el6.elrepo.x86_64.rpm date 28 Feb. 14 to fix the problem. Second question: How do you turn automatic updates OFF. Larry Linder
