Multiple Modems (USB Dongle) problem

[poma]

On 21.10.2015 17:12, Dan Williams wrote:
> On Mon, 2015-10-19 at 09:40 +0200, Aleksander Morgado wrote:
>> Hey John,
>>
>> On Sat, Oct 17, 2015 at 3:16 PM, John Whitmore <arigead at gmail.com> wrote:
>>> This is a development list so possibly the wrong place for this question but
>>> please redirect me as necessary.
>>>
>>
>> No, this is the correct place to ask :)
>>
>>> I've got a problem using two USB LTE Dongle modems of exactly the same
>>> model. They each have a different operators SIM installed. They will both get
>>> added to the linux system (I'm using Arch on a RPi-2) as /dev/cdc-wdm0 and
>>> /dev/cdc-wdm1. BUt they will be added, I imagine, at random.
>>>
>>> Managing which is which is the job of UDEV rules so I've added the necessary
>>> rules to create symbolic links to the two modems as /dev/three and
>>> /dev/vodafone.
>>>
>>> That all works great my problem is that in the network manager when I add a
>>> connection it only offers me the devices /dev/cdc-wdm0 and /dev/cdc-wdm1. NOT
>>> my new symbolic links.
>>>
>>
>> Have you tried to rename the interfaces, as systemd does with the WWAN
>> net interfaces and the "predictable network interface names" setup?
>> You should need to do that before the MM udev rules are used.
>>
>>> So given that it's the NetworkManager agian this might be considered the wrong
>>> list.
>>>
>>> Maybe I should explain the system here. This is going into an RPi-2 in a boat
>>> that floats about a lake. So mobile coverage will change between the two
>>> operators. I'm taking this one step at a time and ultimately I'd like the
>>> system to use which ever connection it can. That might be a problem as the
>>> boat needs to have a web site open on the browser. That web page is used to
>>> upload data so the web page is opened and the boat floats about the lake
>>> populating forms in the web page. If the web page is connected via one
>>> connection and the connection changes that might cause a problem. I've not got
>>> there yet. Like I say one step at a time.
>>>
>>> This might not even be a problem. I mean maybe the NetworkManager creates a
>>> connection, but then the ModemManager has the intelligence to say that you're
>>> trying to open the "vodafone" connection on the wrong modem and just take care
>>> of it?
>>
>> So, the thing here is that NetworkManager should allow binding a given
>> set of mobile broadband settings to a given specific device (based on
>> 'Equipment ID') or SIM (based on ICCID or even MCCMNC); e..g as it can
>> be done with binding settings to a network interface based on the MAC.
>> If that is done, NM would be intelligent enough to enable the correct
>> settings in each modem.
>>
>> Dan, what's the status of this in NetworkManager? Was any change done recently?
> 
> Um, I wrote it on a plane last week and this week, but not upstream yet:
> 
> http://cgit.freedesktop.org/NetworkManager/NetworkManager/log/?h=dcbw/wwan-connection-filters
> 
> Dan
> 

I guess if you wrote it on a plane, you already upstream it.
You have at least used a permanent marker?