Re: Default Gateway with Manual Setting

[Gene Czarcinski <gene czarc net>]

On Monday 05 October 2009 13:21:46 Dan Williams wrote:
> On Mon, 2009-10-05 at 13:07 -0400, John Mahoney wrote:
> > On Sun, Oct 4, 2009 at 1:56 AM, Martyn J. Pearce
> > <fluffy sixears co uk> wrote:
> >         Apogolies if re-asked, I have searched the mailing-list
> >         archive to no avail.
> >
> >         I am running a new ubuntu install on a netbook (Eeepc surf),
> >         with wired &
> >         wireless networking available, both domestic
> >         manually-configured networks (no
> >         dhcp).  I have added Manual profiles to both wired &
> >         wireless.  I cannot get
> >         the default gateway (192.168.0.12) to configure, however.
> >
> >         I add two routes in the route config panel; one for
> >         192.168.0.0/255.255.255.0
> >         (no gateway), and one for 0.0.0.0/0.0.0.0 (gateway
> >         192.168.0.12).  Having left
> >         the edit dialogue, and applied, there is no difference to the
> >         routing table as
> >         displayed with route -n.  If I re-enter the routes edit panel,
> >         I find that
> >         it's collapsed the routes into one, being
> >         192.168.0.0/255.255.255.0 (gateway
> >         192.168.0.12); but there's no hint of the gateway in the route
> >         config.
> >
> >
> > Did you try adding the Default gateway to the Addresses section of the
> > ipv4 settings tab instead of the routes section.
> > Also, If you have both wired and wireless interfaces active, I
> > believe, it will always use the wired default route first if possible.
> 
> The routes dialog doesn't take 0.0.0.0, because that's the default
> route, and  NM manages the default route.  Here's what you do...
> 
> Set up your IP address and static routes.  By default, the wired device
> will always get the default route.  If there is a device (any device)
> that you do *not* want to have the default route at any point, check the
> "Use this connection only for resources on its network" checkbox in the
> "Routes" dialog of the IPv4 page.
> 
> That checkbox ensures that that connection (and thus any device that has
> been activated using that connection) will not be the default route.

Nice in theory but this does not work in practice on with Fedora 11 or Fedora 
12 -- https://bugzilla.redhat.com/show_bug.cgi?id=523875

As I see it, there is one and possible two problems:

1. The "connection only" does not stay checked (and, I assume, the appropriate 
parameter does not get set).

2. If "connection only" checkbox be made to work, is the default route set 
properly.

IMHO, this is an important problem that needs fixing .. in at least F12 if not 
in F11.

OK, there are only so many hours in a day and the maintainers/developers of 
NetworkManager have a lot to do ... and, from the looks of it, NetworkManager 
is a lot of code.

So, I am willing to put some time in on this.  I downloaded and installed the 
F12 source rpm.   As I said, NetworkManager is a lot of code and I would 
prefer to spend my time constructively rather than learning about all of 
NetworkManager.  Could someone provide some guidance as to where (what source 
files) I should be looking?

Gene