CentOS - May 2015 - dummy interface shenanigans - CentOS6

tl;dr - a renamed dummy interface is not persisting across reboots on Cent6.

I have a situation where I need to rename a dummy interface on my system.

I have a total of 3 dummy interfaces:

dummy0
dummy1
adummy0

I've been doing some puppet testing in a vbox VM to get this all
sorted out to deploy to a group of boxes.  Every time I reboot my VM,
it comes up WITHOUT adummy0, but I notice there is now an unconfigured
dummy2.

I've tried everything from adding aliases to
/etc/modprobe.d/dummyopts.conf to renaming the interface via "ip" (ip
link set dummy2 name adummy0).  This is all fine during use, even
during a network restart.  But as soon as I restart the VM, it comes
back up broken.

I for the life of me have been unable to figure out why.  I could use
some help in narrowing down why this won't persist across reboots.  I
can write a startup script to deal with it, but it doesn't seem like a
good solution.

Thanks,
Frank

On Wed, May 27, 2015 at 1:37 AM, Frank Even
<lists+centos.org at elitists.org> wrote:
> tl;dr - a renamed dummy interface is not persisting across reboots on
Cent6.
>
> I have a situation where I need to rename a dummy interface on my system.
>
> I have a total of 3 dummy interfaces:
>
> dummy0
> dummy1
> adummy0
>
> I've been doing some puppet testing in a vbox VM to get this all
> sorted out to deploy to a group of boxes.  Every time I reboot my VM,
> it comes up WITHOUT adummy0, but I notice there is now an unconfigured
> dummy2.
>
> I've tried everything from adding aliases to
> /etc/modprobe.d/dummyopts.conf to renaming the interface via "ip"
(ip
> link set dummy2 name adummy0).  This is all fine during use, even
> during a network restart.  But as soon as I restart the VM, it comes
> back up broken.
>
> I for the life of me have been unable to figure out why.  I could use
> some help in narrowing down why this won't persist across reboots.  I
> can write a startup script to deal with it, but it doesn't seem like a
> good solution.
>
> Thanks,
> Frank
Anybody have any insights?

Frank Even wrote:
> On Wed, May 27, 2015 at 1:37 AM, Frank Even
> <lists+centos.org at elitists.org> wrote:
>> tl;dr - a renamed dummy interface is not persisting across reboots on
>> Cent6.
>>
>> I have a situation where I need to rename a dummy interface on my
>> system.
>>
>> I have a total of 3 dummy interfaces:
>>
>> dummy0
>> dummy1
>> adummy0
>>
>> I've been doing some puppet testing in a vbox VM to get this all
>> sorted out to deploy to a group of boxes.  Every time I reboot my VM,
>> it comes up WITHOUT adummy0, but I notice there is now an unconfigured
>> dummy2.
>>
>> I've tried everything from adding aliases to
>> /etc/modprobe.d/dummyopts.conf to renaming the interface via
"ip" (ip
>> link set dummy2 name adummy0).  This is all fine during use, even
>> during a network restart.  But as soon as I restart the VM, it comes
>> back up broken.
>>
>> I for the life of me have been unable to figure out why.  I could use
>> some help in narrowing down why this won't persist across reboots. 
I
>> can write a startup script to deal with it, but it doesn't seem
like a
>> good solution.
>>
>
> Anybody have any insights?
What's in /etc/udev/rules.d/70-persistant-net.rules?

      mark