Lost network device on upgrade to 15.10 on test VM
I just upgraded my test and development VM to 15.10, and I lost my network device eth0.
ifconfig just reports the loopback device adapter, yet lspci reports the Intel network controller is there.
Solution 1:
The network adapter was renamed from eth0 to enp0s3.
I found this out by using dmesg | grep eth0.
I then updated the file /etc/network/interfaces by changing eth0 to enp0s3.