On Sat, 2009-04-25 at 14:52 -0500, Les Mikesell wrote: > JohnS wrote: > > On Sat, 2009-04-25 at 20:33 +0200, Kai Schaetzl wrote: > >> I have a strange problem on one machine where eth0 gets killed when I add > >> a virtual interface. It's got something to do with the NIC ordering or > >> with the xen network script having a problem with multiple NICs and > >> virtual interfaces. I could need some help/comments on this. > >> > >> Some history: > >> I added a NIC (chip identifies as Realtek Semiconductor Co., Ltd. > >> RTL8111/8168B PCI Express Gigabit Ethernet) to a Dell R200 server. > >> CentOS 5.3 with Xen 3.3.1 (gitco repo). > > ---- > > see this: > > http://linux.dell.com/files/whitepapers/nic-enum-whitepaper-v3.pdf > > > > This is a known issue with all Poweredge Servers. It will give you an > > explanation and workaround for it. > > I don't think there is anything unique to Dells about this. The kernel > essentially randomizes device naming on everything. Dell just took the > trouble to document it. ---- >From what I understand this was only with dell hardware that this was happening and they submitted a patch to red hat. Also it is the only hardware I have encountered with the problem also. There could be others. What's more is Kai says he's running 5.3 but the fix should be in that kernel. What I do wonder is if when the centos kernel was built, was it included? Maybe the CentOS Kernel builder could let us know? 2.6.19-rc3 and higher are supposed to have the fix? It is however a strange thing when you encounter it. I pulled my hair for a long time. Last thing is he has this problem on a R200 and from memory those were not a problem. Could be this is something new? He could check for a BIOS Revision if there is one. JohnStanley