Huawei ME906s-158 (a.k.a. HP lt4132) IPv6 support

[Aleksander Morgado]

On Thu, Jul 6, 2017 at 7:26 AM, Tore Anderson <tore at fud.no> wrote:
>> The LT4120 might have it's own challenges. The website you are
>> referring to does add udev rule to set the configuration of the
>> modem, as it seems to be in win8 mode as original, and that the Linux
>> system does not seem to cope with very well.
>
> I just received the replacement lt4120 modem HP sent me and it actually
> seems to work quite well - including IPv6 connectivity. The only issue
> was that it came up in configuration #2 by default, and in this mode MM
> doesn't pick it up.
>
> After switching it to configuration #3 (MBIM) everything Just Worked
> without any further tinkering. I see the blog post author went for
> configuration #1 instead, and that looks more cumbersome pull off.
> Maybe it has any distinct advantage over MBIM mode he needed, I don't
> know.
>
> Anyway, all I needed was to add a udev rule such as:
>
> ACTION=="add|change", ATTR{idVendor}=="03f0", ATTR{idProduct}=="9d1d", ATTR{bConfigurationValue}=="2", ATTR{bConfigurationValue}:="3"
>
> As I understand it this would not have been necessary for me to do if
> Fedora had shipped the latest version of usb_modeswitch, which adds
> support for this particular device (switching it to MBIM mode).

Yes, usb_modeswitch should by default switch that one to MBIM mode.

Also, see this thread where I play a bit with this device:
https://lists.freedesktop.org/archives/libqmi-devel/2017-January/001916.html

But please note that the last consensus for the
--dms-hp-change-device-mode qmicli option was to limit it to the only
value we currently care about, which is "fastboot", enabling firmware
update via QMI PDC using abarouski's procedure.

-- 
Aleksander
https://aleksander.es