I use System Rescue CD to repartition / backup / restore hard drive partitions, but a not-very-recent change to
udev caused the familiar
eth0 name to come up as something like
enp0s26u1u2 on the Lenovo Q150. Which would be OK, but feeding either that or
net-setup causes it to fall over dead.
Avoiding that mess requires an incantation in the kernel boot parameters: select a main boot option, hit Tab, type
net.ifnames=0 (with a leading space), and whack Enter to boot. Then good old
eth0 appears where it should and everything works.
It’s annoying, but not quite enough to create a specialized SysRescCD image with that incantation preloaded.