VMWare: network lost in Ubuntu VM after moving or copying

I came across an unusual problem with one of my Ubuntu virtual machine after copying it, which cause the network to stop working and my eth0 adaptor to disappear.

The problem was caused by VMWare creating a new MAC address for the new (copied) VM, and a mismatch between this new MAC address and the address recorded in the Ubuntu /etc/udev/rules.d/70-persistent-net.rules file.

It took me a while to figure out how to fix it (well, it was quick after I discovered which file to edit): edit 70-persistent-net.rules so that the MAC address for eth0 matches that given by VMware:

VMware Fusion

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70-persistent-net.rules
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Edit the file so that the MAC address in the ATTR{address} field matches what VMWare allocates to this adaptor, and restart the virtual machine.

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