On Apr 6, 2013 3:44 PM, "Neil Bothwick" <n...@digimed.co.uk> wrote:
>
> On Fri, 5 Apr 2013 21:14:39 -0400, Walter Dnes wrote:
>
> > * on a machine with multiple network cards *ALL USING DIFFERENT DRIVERS*
> > * drivers are built as modules, not built-in into the kernel
> > * is it possible to set things up so that the network driver modules do
> >   not load automatically at bootup?
> > * have a script in /etc/local.d/ (or wherever) modprobe the drivers in
> >   the desired order
> >
> >   I can see complications involving services that depend on net (e.g.
> > sshd), but in general, would it work reliably?
>
> What happens if one of the modules fails to load for any reason?
>
> If you need persistent device names, set up rules to give them, but use
> names outside of the kernel namespace to avoid kk problems that udev is
> trying to avoid with its new naming rules.ooh
>

Ahhh... I think now I understand...

So. Here's my summarization of the situation:

* The ethX naming can change, i.e., the interfaces can get out of order
* So, to fix this, udev decided to use the physical attachment points of
the NIC in driving a persistent name, a name that will be identical across
boots as long as there is no hardware change
* In doing so, it also frees the 'traditional' ethX names to be used
* If one wants, one can still 'rename' the NICs to the 'traditional' names
using the 70-*.rules script
* Doing so (specifying the NICs' names using the 70-*r.rules script) will
also disable the new 'persistent naming' system -- for the NICs specified
in the 70-*r.rules file
* Therefore, users that will be impacted are those that upgraded udev but
doesn't have the 70-*r.rules, for udev will then assign new names for the
NICs
* For these users, specifying the net....something switch for the kernel
(sorry, forgot the complete switch) will disable the new naming system

So, have I gotten everything correctly?

CMIIW, please.

Rgds,
--

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