Re: RPi-2 Arch multiple modems

[Dan Williams <dcbw redhat com>]

On Sun, 2015-12-13 at 13:12 +0100, Thomas Haller wrote:
> On Sat, 2015-12-12 at 19:33 +0000, John Whitmore wrote:
> > Hello all,
> >
> > I had a Raspberry Pi running Arch with two USB LTE Modems on two
> > differet
> > Network operators. This was all working perfectly but suddenly
> > crashed mid
> > week. Instead of repairing that old system, I still have it and can
> > go back to
> > it, but I decided that I'd grab a new SD card and install the
> > latest
> > and
> > greatest.
> >
> > This is where the problem is I create my two LTE network
> > connections
> > and
> > sometimes the network manager seems to be attempting to create
> > network
> > connections on the wrong modem. 
> >
> > When I pulled one modem I powered up and got an IP Address from one
> > connection
> > but when I couldn't ping anything I had a look in the network
> > manager
> > and it's
> > connected a "Three" operator connection on a "Vodafone" SIM. This
> > used to work
> > perfectly.
> >
> > BTW as both my modems are exactly the same model I can't
> > distinguish
> > them with
> > udev rules.
>
>
>
> Only recently, on master there are 3 connection properties to match a
> gsm-onnection on a device: device-id, sim-id, and sim-operator-id.
>
> https://bugzilla.gnome.org/show_bug.cgi?id=756916
> http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=
> dd2f09c8b166cc5f317a5298f01ea161c63895e6
>
> I think that would be a solution for you, but the patches are not
> backported to nm-1-0 branch.

I did backport the branch to dcbw/bgo756916-wwan-connection-filters-1-0
but haven't proposed that yet since I haven't had time to test it. 
 However, the backport was pretty smooth.

Dan