On Wed, 2013-02-13 at 15:28 -0600, Bruce Dubbs wrote:
> Matt Burgess wrote:
> 
> >
> > I think that's the problem.  My host (Fedora 18) calls my eth0 device
> > p5p1.
> 
> What on earth are they doing?  The link 
> http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames
>  
> indicates names starting with en.  Without the en, it doesn't make 
> things very predictable.

Oh, it's completely predictable, as long as you understand that Fedora's
rules appear to be different than upstreams :-)

http://fedoraproject.org/wiki/Features/ConsistentNetworkDeviceNaming#User_Experience
 - as it's detected as a PCI device, it gets prefixed with 'p', it's detected 
as being in slot 5 and port 1 so therefore becomes p5p1, easy eh? :-)

Apparently, I can disable this by adding 'biosdevname=0' to my kernel
command line.  I'm not sure we can rely on that having been done though.

> > So, when I run ./init-net-rules.sh, none of the DEVICES strings
> > match, so it only picks up my wlan0 device and populates
> > 70-persistent-net.rules with that.  That leaves 80-net-name-slot.rules
> > to do its thing, and give me the rather unpleasant enp7s0 device name.
> 
> > Now, once I'm booted into LFS, and run init-net-rules.sh again, my
> > 70-persistent-net.rules is populated with both my Ethernet & Wlan cards,
> > but the Ethernet device is once again going to get a name of enp7s0.
> 
> After a 2nd reboot?

Yes, the rule generated in 70-persistent-net.rules is:

# net device r8169
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="5c:9a:d8:57:75:2e", ATTR{dev_id}=="0x0",
ATTR{type}=="1", KERNEL=="enp*", NAME="enp7s0"

So, it will always be crap no matter how many times I reboot (oh, if
only this were Windows, a random number of reboots might get it to be
correct :-) )
> > I
> > can only assume this is /lib/udev/write_net_rules (called toward the end
> > of init-net-rules.sh) doing this?
> 
> Yes, that writes 70-persistent-net.rules.

So it is write_net_rules that is generating that stupid NAME= value into
the rules file?  If so, due to the ATTR{address} match, I can easily
change that back to 'eth0', but I'd like that to be done automagically,
if possible.

Thanks,

Matt.

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