networking/detect failed with the inconsistency of the number of devices found by udev/nm

[Po-Hsu Lin]

CID: 201202-10527 Dell Vostro 3460

With this submission: https://certification.canonical.com/hardware/201202-10527/submission/92234/

This system is equipped with 3G Modem, thus causing some error while running network/detect

Error message:
---------------------------[ Devices found by udev ]----------------------------
Category: WIRELESS
Interface: wlan0
Product: Centrino Wireless-N 2230
Vendor: Intel Corporation
Driver: iwlwifi (ver: 3.5.0-34-generic)
Path: /devices/pci0000:00/0000:00:1c.0/0000:01:00.0/net/wlan0

Category: NETWORK
Interface: eth0
Product: AR8161 Gigabit Ethernet
Vendor: Atheros Communications Inc.
Driver: alx (ver: 1.2.3)
Path: /devices/pci0000:00/0000:00:1c.4/0000:02:00.0/net/eth0

Category: NETWORK
Interface: usb0
Vendor: Dell Computer Corp.
Driver: cdc_ncm (ver: 3.5.0-34-generic)
Path: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/2-1.6:1.6/net/usb0

----------------------[ Devices found by Network Manager ]----------------------
Category: WiFi
Interface: wlan0
IP: 10.101.46.252
Driver: iwlwifi (ver: 3.5.0-34-generic)
State: Disconnected

Category: Ethernet
Interface: eth0
IP: 0.0.0.0
Driver: alx (ver: 1.2.3)
State: Unavailable

ERROR: Ethernet devices missing: udev showed 2 devices, but NetworkManager saw 1 devices

And here comes another problem, the number of devices here in the last line is different form the number devices listed above.
According to scripts/network_device_info script, the "number of devices" from network manager and from udev were set to nm_type_devices and udev_type_devices instead of nm_devices and udev_devices, which seems to be the cause of this problem.

Also, the Modem is not detected here by the Network Manager.

[Po-Hsu Lin (cypressyew)]

Additional information:

On another laptop with 3G Modem, there is no such problem.
But the interface of it was eth1, not usb0 as the problematic one

---------------------------[ Devices found by udev ]----------------------------
Category: NETWORK
Interface: eth0
Product: 82579LM Gigabit Network Connection
Vendor: Intel Corporation
Driver: e1000e (ver: 2.1.4-k)
Path: /devices/pci0000:00/0000:00:19.0/net/eth0

Category: WIRELESS
Interface: wlan0
Product: Centrino Advanced-N 6205 [Taylor Peak]
Vendor: Intel Corporation
Driver: iwlwifi (ver: 3.8.0-25-generic)
Path: /devices/pci0000:00/0000:00:1c.1/0000:02:00.0/net/wlan0

Category: NETWORK
Interface: eth1
Vendor: Dell Computer Corp.
Driver: cdc_ether (ver: 3.8.0-25-generic)
Path: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/2-1.6:1.6/net/eth1

----------------------[ Devices found by Network Manager ]----------------------
Category: Ethernet
Interface: eth0
IP: 10.101.46.250
Driver: e1000e (ver: 2.1.4-k)
State: Unavailable

Category: WiFi
Interface: wlan0
IP: 192.168.0.41
Driver: iwlwifi (ver: 3.8.0-25-generic)
State: Activated

Category: Ethernet
Interface: eth1
IP: 0.0.0.0
Driver: cdc_ether (ver: 3.8.0-25-generic)
State: Disconnected