Re: question on ifcfg-em1 (consitent network device naming related)

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On 04/26/2011 07:35 PM, James Laska wrote:
> On Tue, 2011-04-26 at 16:35 +0530, Kashyap Chamarthy wrote:
>> Hi,
>>
>> So it's been a few days now with F15 beta, with the sleek Gnome3 installed.(Machine - DELL
>> Precision T5400). Apart from a few glitches, this looks good.
>>
>> Now, I'm aware of the 'Consistent-Network-Device-Naming' feature.
>>
>> Question:
>> 	- In the stock F15 install, I don't see an 'ifcfg-em1' file in network-scripts directory.
>> Is that intentional?
>
> What do you see there?

I just see the loopback stuff - 'ifcfg-lo' . No other ifcfg-*

  Using NetworkManager (nm-connection-editor), did
> you configure networking to start/connect automatically?

I didn't configure anything explicitly. I just used the stock F15 beta. So that means, yes 
NM was in play.
>
>> 		+ I use plenty of Virtualization with bridging. So do I have to manually create
>> ifcfg-em1 (without HWADDR entry -- I read this in the release-note that all HWADDR entries
>> shall be removed from ifcfg-*) ?
>
> To make use of bridged networking for virtualization, it is still
> expected that you create the ifcfg-* files by hand.

yep, that's what I do/did (like I noted at the end in the previous mail)
   I believe HWADDR
> only comes into play for upgraded systems, or if you want to use an
> unusual device name.  If an upgraded system already has HWADDR present
> (and possible also matching udev rules), the old device name will be
> used.  Otherwise, you get the new naming scheme.

yes, read about this.

Thanks James.

/kashyap
>
>> Here is some info which confirms that my DELL machine is impacted.
>> --------------------------------------------------------------------
>> [root@sunrise export]# ./Biosdevname-support-check.sh
>> Checking hardware requirements                             [  OK  ]
>> Checking for SMBIOS type 41 support                        [FAILED]
>> Checking for SMBIOS type 9 support                         [  OK  ]
>> Checking for PCI Interrupt Routing support                 [  OK  ]
>> [root@sunrise export]#
>> --------------------------------------------------------------------
>> [root@sunrise ~]# ls /sys/class/net
>> em1  lo  virbr0
>> [root@sunrise ~]#
>> --------------------------------------------------------------------
>>
>> Note: I manually created an ifcfg-em1 andifcfg-br0(for bridging) with usual parameters
>> (*except* HWADDR) ; stopped NM ; start good old 'network' and things work just fine with
>> bridging.
>
> Thanks,
> James
>
>

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