I reimaged a compute node on our cluster with the latest 5.3 updates (we were previously running 5.2), but we kept the kernel at 2.6.18-92.1.10.el5 until I can find time to rebuild some of our kernel modules. After the image install finishes and the system reboots, the eth0 ethernet interface disappears. If I do an ifconfig a, I see what should be eth0, but it¹s listed as __tmp2081258173. [root at node0770 ~]# ifconfig -a __tmp2081258173 Link encap:Ethernet HWaddr 00:1E:68:86:67:04 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:66 The dmesg output isn¹t very helpful: [root at node0770 ~]# dmesg|grep eth0 eth0: forcedeth.c: subsystem: 0108e:534b bound to 0000:00:08.0 If I remove our lustre modules that were built for the 2.6.18-92.1.10.el5 kernel and reboot, the eth0 interface reappears. Another piece to this puzzle is that this problem only seems to happen on our Sun X2200¹s. Our Dell 1950¹s work just fine after putting on the 5.3 updates. Anyone know what could cause this behavior? Thanks, Randy -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090519/fced4bcb/attachment-0004.html>