[CentOS] Network card not working after update to 2.6.18-194.17.4.el5

Thu Oct 28 07:02:32 UTC 2010
Mathieu Baudier <mbaudier at argeo.org>


the network card of my workstation stopped working after I updated the
kernel to 2.6.18-194.17.4.el5 .
I don't see any specific error messages when booting, and the related
interface is shown as up by ifconfig with its (static) IP address
properly set.
But I cannot reach any other computer or router on the LAN (whereas
other boxes work fine).
Where the network cable is plugged, an orange light stays on and does not blink.

Booting with 2.6.18-194.17.1.el5 instead solves the issue.

The network card is:
Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8110SC/8169SC
Gigabit Ethernet (rev 10)

I just wanted to share this, and see if anybody else experienced such issues.
It makes me feel uncomfortable with updating some remote servers,
because it would really be a pain to fix if their network cards
stopped working after rebooting (they are not the same as the one of
my workstation, but I would feel safer if I could find out that this
is a problem with my computer and not with the kernel)