network profiles - do they work for you? they are broken for me!

Valent Turkovic valent.turkovic at
Thu May 24 20:10:35 UTC 2007

Can you please look at my youtube video and then respond if I use
system-config-network how it is not supposed to be used or if
system-config-network is broken?

On 5/17/07, John DeDourek <dedourek at> wrote:
> Valent Turkovic wrote:
> > Hi,
> > I tried using network profiles on my Fedora Core 6 and Fedora 7
> > systems and they don't work for me.
> >
> > Can you tell me if you use network profiles build into
> > system-config-network and system-control-network tools?
> >
> > When I use gui system-config-network to setup network profiles no
> > matter which one I choose and edit I end up with all the profiles with
> > the same settings!
> >
> > I can't setup two different profiles!
> >
> > Can you please explain how do you use network profiles via
> > system-config-network ?
> >
> > Thank you.
> >
> First, I am doing this from home, from memory, so I can't
> give you exact wordings of menu items, nor exact location
> of menus.  But this general procedure works for FC5.  I can't
> at the moment verify it for FC6 or FC7.
> I use the following procedure.
> --I leave the configuration of all the interfaces as installed
> --I leave the contents of the default profile as installed
> When I want a new profile, say for my home lan, using the
> GUI:
> -- Make a "copy" of the appropriate lan interface
> -- Edit the copy of the lan interface (leaving the original
>    alone);  I usually change the name of the interface from
>    the "Copy of eth0" to something like "HomeLan"; I also edit
>    whatever other features I want to select for the home LAN,
>    e.g. static or dynamic IP, etc.
> -- Create a new profile, say HomeLan; it doesn't bother me
>    to have a profile and interface named the same; however
>    if you find that confusing, name the interface "HomeLanIface"
>    and name the profile "HomeLanProfile"
> -- Make sure only the appropriate interface (e.g. HomeLan" is
>    now checked from the profile (HomeLan)
> -- Save it; (I think File->Save
> You're done
> What is hapening behind the scenes:
> Each of those interfaces is a script file containing bash
> variable assignments.  You need a separate file for the LAN
> interface for each profile, because they need to have different
> values assigned to the variables.  When you say that all the
> profiles are the same, I am presuming that you are not making
> a separate copy of the interface for each profile.  So of course,
> you are always essentially constantly changing the values in
> the one and only interface file.  These files are kept somewhere
> like /etc/sysconfig/networking/devices/
> Each of the profiles is a directory, I think under
> /etc/sysconfig/networking/profiles/   In that directory is
> a symbolic link to each of the "device" files that is
> configured for that interface.
> When you switch profiles, the "device" files (which are
> named something like "ifcfg-HomeLanIface") for the old
> profile are deleted from /etc/sysconfig/network-scripts/ and
> the "device" files for the new profile are copied in.
> Actually, I think that's wrong; the scripts are probably not
> copied, but links are created.  I seem to recall that they
> are hard links rather than symbolic links.
> BTW, if you use the commands /sbin/ifup and /sbin/ifdown rather
> than the GUI to bring the interfaces up and down, use the
> device name (interface name) that you created in the GUI,
> not the Linux interface name as you would use it in
> /sbin/ifconfig.  That is, use
>     /sbin/ifup HomeLanIface
>     /sbin/ifdown HomeLanIface
> Hope this is useful to you.
> --
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