I have cloned my raspberry pi SD card after customising the OS. However, when I try to boot it on a different pi, everything appears fine, but eth0 doesn't show up in ifconfig. When I try 'ifup eth0', I get:
ERROR: interface eth0 does not exist
I found this solution involving the file "70-persistent-net.rules" here. So, when I do:
And, then reboot, the problem is solved.
What's causing this problem? Is there a better way to solve this problem, one that can be automated?