I'm using Ubuntu 12.04 LTS server edition and I am modifying
/etc/udev/rules.d/70-persistent-net.rules to define my own mappings of ethernet interfaces to MAC addresses; that file is initially generated by rules in
/lib/udev/rules.d/75-persistent-net-generator.rules at system installation time (or at the first boot, I actually don't know and it doesn't matter here).
How can I be sure that my edited version will never ever be overwritten by anything?
Removing the persistent-net-generator, as suggested on some websites, is not the Right Thing™ to do as told by comments in the file itself: it will be overwritten by any update of the
udev package. I'm looking for a more formally correct way to disable it.
Is it enough to just make sure that
/etc/udev/rules.d/70-persistent-net.rules does exist?
Maybe there are other events that could trigger its regeneration? (eg. adding or removing ethernet interfaces to the system?)