I hope someone out there has a bit of xen experience and can enlighten me on a networking issue.
I installed Fedora Core 5 and proceeded to install the xen kernels and toolkits. After rebooting into the Xen dom0 kernel, I find that the machine can no longer communicate over the network. After doing some sniffing and digging I found that the reason for this is that packets are going out of the ethernet interface with a source address of FF:FF:FF:FF:FF:FF, which is the default mac address assigned to the xen- specific peth0 interface. I have another xen host (FC4) that apparently had done the same thing, so now that there were two machines on the network with the same mac address (FF:FF:FF:FF:FF:FF), packets no longer travel correctly. From what I've read, this mac address needn't be changed because it's an internal mac address and that address should never make it out on the wire (the real interface's mac address would be used for dom0). This is very confusing and the docs on xen networking are not very good. Is this normal for the dom0 packets to go out with the FF:FF:FF:FF:FF:FF address? I can't think it is, as that is supposed to be an ethernet broadcast address. I haven't altered any configs at all yet. This is an out-of-the-box FC5 install. Any advice is appreciated. thanks. Michael /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
