Comment 0 for bug 1277436

The biosdevname package includes /lib/udev/rules.d/71-biosdevname.rules, which makes it rename the interfaces when the machine boots. This is now installed by default in trusty, and so most machines will have this rename going on. However, the rule is not present in the initramfs, so that if there's any program that calls configure_networking (like dropbear does) during the initial boot, then the interface stays with the unrenamed name.

What this means is that the interface is called something different depending on the fact that another program (dropbear) is installed or not. This shouldn't be the case.

The biosdevname rule should be copied into the initramfs inside the udev hook, like the other rules are.