Originally reported at: https://bugzilla.gnome.org/show_bug.cgi?id=730918 http://lists.freedesktop.org/archives/modemmanager-devel/2014-April/001062.html There are devices out there (e.g. Huawei E355) which expose a WWAN port, flagged as WWAN by the kernel, but which doesn't require any further setup via any control protocol. MM could have a new 'probing' property to let users know that a device is being probed, and if the probing ends without MM creating a modem for a given WWAN port, NM could take over the control of the port and try IP setup on it directly as if it were an Ethernet interface.
This problem also occurs with the Huawei E5372T. A detailed bug report, including debug output, exists here: https://bugzilla.gnome.org/show_bug.cgi?id=723978
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