Ubuntu: disable udev's persistent-net-generator.rules

Posted by Luke404 on Server Fault See other posts from Server Fault or by Luke404
Published on 2012-09-10T09:09:04Z Indexed on 2012/09/10 9:39 UTC
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Filed under:

linux

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ubuntu

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networking

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linux-networking

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udev

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?)

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