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different MAC address. As a result, when the new VM is started for the first time, the network does recognize
the new VM and does not come up automatically.
2. Some Linux distributions use udev rules to remember the MAC address of each network interface, and persist
a name for that interface. This is intended so that the same physical NIC always maps to the same eth<n>
interface, which is particularly useful with removable NICs (like laptops). However, this behavior is problematic
in the context of VMs. For example, if you configure two virtual NICs when you install a VM, and then shut it
down and remove the first NIC, on reboot XenCenter shows just one NIC, but calls it eth0. Meanwhile the
VM is deliberately forcing this to be eth1. The result is that networking does not work.
If the VM uses persistent names, Citrix recommends disabling these rules before cloning. If for some reason you
do not want to turn persistent names off, you must reconfigure networking inside the VM (in the usual way).
However, the information shown in XenCenter will not match the addresses actually in your network.
