TP-Link Archer C7 v5 with TELSEC TS-1K6 USB 4G Modem

Hi friends,
First thing, sorry but i'm not an English native speaker.
I'm trying to use OpenWrt with a TP-Link Archer C7 v5 and a TELSEC TS-1K6 USB 4G Modem (Quanta Computer, Inc Vendor 0408 Product ea49, then Product ea45 after usb_modeswitch).
After some sniffing I could get it to work on a Debian machine using usb_modeswitch with the sniffed magic number (for future use):

55534243e9010000000000000000061e000000000000000000000000000000

and

55534243ea010000000000000000061b000000020000000000000000000000

On Debian, the device is recognized as an ethernet adapter and works flawless.

I'm trying to do the same using OpenWrt on a TP-Link Archer C7 v5. Using the some guides (e.g.: Use NCM USB Dongle for WAN connection ) but I can't find /dev/usb0 or /dev/cdc-wdm0 .

OpenWrt : 19.07.4
Modem Firmware :
MDM_VERSION=1K6HLQCI_M1.211_50252
AP_VERSION=1.0.03.50252

dmesg:

root@OpenWrt:~# dmesg
[    0.000000] Linux version 4.14.195 (builder@buildhost) (gcc version 7.5.0 (OpenWrt GCC 7.5.0 r11208-ce6496d796)) #0 Sun Sep 6 16:19:39 2020
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019750 (MIPS 74Kc)
[    0.000000] MIPS: machine is TP-Link Archer C7 v5
[    0.000000] SoC: Qualcomm Atheros QCA956X ver 1 rev 0
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 08000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x0000000007ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000007ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff]
[    0.000000] On node 0 totalpages: 32768
[    0.000000] free_area_init_node: node 0, pgdat 804fbf70, node_mem_map 810090a0
[    0.000000]   Normal zone: 256 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 32768 pages, LIFO batch:7
[    0.000000] random: get_random_bytes called from 0x804ff740 with crng_init=0
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 32512
[    0.000000] Kernel command line: console=ttyS0,115200n8 rootfstype=squashfs,jffs2
[    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 123296K/131072K available (4031K kernel code, 160K rwdata, 532K rodata, 1220K init, 212K bss, 7776K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 51
[    0.000000] CPU clock: 775.000 MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 4932285024 ns
[    0.000008] sched_clock: 32 bits at 387MHz, resolution 2ns, wraps every 5541893118ns
[    0.008236] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[    0.074782] pid_max: default: 32768 minimum: 301
[    0.079802] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.086787] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.097900] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.108302] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.114794] pinctrl core: initialized pinctrl subsystem
[    0.122339] NET: Registered protocol family 16
[    0.129829] PCI host bridge /ahb/pcie-controller@18250000 ranges:
[    0.136306]  MEM 0x0000000012000000..0x0000000013ffffff
[    0.141809]   IO 0x0000000000000000..0x0000000000000000
[    0.162054] PCI host bridge to bus 0000:00
[    0.166378] pci_bus 0000:00: root bus resource [mem 0x12000000-0x13ffffff]
[    0.173663] pci_bus 0000:00: root bus resource [io  0x0000]
[    0.179533] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[    0.186697] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[    0.195067] pci 0000:00:00.0: [168c:003c] type 00 class 0x028000
[    0.195119] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x001fffff 64bit]
[    0.195170] pci 0000:00:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
[    0.195243] pci 0000:00:00.0: supports D1 D2
[    0.195416] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
[    0.195439] pci 0000:00:00.0: BAR 0: assigned [mem 0x12000000-0x121fffff 64bit]
[    0.203191] pci 0000:00:00.0: BAR 6: assigned [mem 0x12200000-0x1220ffff pref]
[    0.213355] clocksource: Switched to clocksource MIPS
[    0.219565] NET: Registered protocol family 2
[    0.224925] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.232280] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.239033] TCP: Hash tables configured (established 1024 bind 1024)
[    0.245873] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.252041] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.258897] NET: Registered protocol family 1
[    0.263565] PCI: CLS 0 bytes, default 32
[    0.266090] Crashlog allocated RAM at address 0x3f00000
[    0.272735] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[    0.283856] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.290002] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.308614] io scheduler noop registered
[    0.312749] io scheduler deadline registered (default)
[    0.318515] ar7200-usb-phy usb-phy: phy reset is missing
[    0.325644] pinctrl-single 1804002c.pinmux: 544 pins at pa b804002c size 68
[    0.333460] gpio-export gpio-export: 1 gpio(s) exported
[    0.339690] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    0.348468] console [ttyS0] disabled
[    0.352269] 18020000.uart: ttyS0 at MMIO 0x18020000 (irq = 9, base_baud = 1562500) is a 16550A
[    0.361403] console [ttyS0] enabled
[    0.368971] bootconsole [early0] disabled
[    0.394362] m25p80 spi0.0: w25q128 (16384 Kbytes)
[    0.399278] 8 fixed-partitions partitions found on MTD device spi0.0
[    0.405859] Creating 8 MTD partitions on "spi0.0":
[    0.410813] 0x000000000000-0x000000020000 : "factory-uboot"
[    0.417264] 0x000000020000-0x000000040000 : "u-boot"
[    0.423001] 0x000000040000-0x000000050000 : "partition-table"
[    0.429623] 0x000000050000-0x000000060000 : "art"
[    0.435178] 0x000000060000-0x000000080000 : "info"
[    0.440755] 0x000000080000-0x0000000c0000 : "user-config"
[    0.447017] 0x0000000c0000-0x000000fc0000 : "firmware"
[    0.456709] 2 uimage-fw partitions found on MTD device firmware
[    0.462825] Creating 2 MTD partitions on "firmware":
[    0.467999] 0x000000000000-0x000000190000 : "kernel"
[    0.473801] 0x000000190000-0x000000f00000 : "rootfs"
[    0.479499] mtd: device 8 (rootfs) set to be root filesystem
[    0.485423] 1 squashfs-split partitions found on MTD device rootfs
[    0.491812] 0x000000450000-0x000000f00000 : "rootfs_data"
[    0.498014] 0x000000ff0000-0x000001000000 : "default-config"
[    0.505515] libphy: Fixed MDIO Bus: probed
[    1.183708] libphy: ag71xx_mdio: probed
[    1.190682] switch0: Atheros AR8337 rev. 2 switch registered on mdio-bus.0
[    1.844875] ag71xx 19000000.eth: connected to PHY at mdio-bus.0:00 [uid=004dd036, driver=Atheros AR8216/AR8236/AR8316]
[    1.856472] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode: sgmii
[    1.865520] NET: Registered protocol family 10
[    1.875368] Segment Routing with IPv6
[    1.879240] NET: Registered protocol family 17
[    1.883923] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    1.897321] 8021q: 802.1Q VLAN Support v1.8
[    1.903639] hctosys: unable to open rtc device (rtc0)
[    1.914294] VFS: Mounted root (squashfs filesystem) readonly on device 31:8.
[    1.928214] Freeing unused kernel memory: 1220K
[    1.932891] This architecture does not have kernel memory protection.
[    2.548484] init: Console is alive
[    2.552212] init: - watchdog -
[    2.563403] random: fast init done
[    3.597690] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    3.828363] usbcore: registered new interface driver usbfs
[    3.834158] usbcore: registered new interface driver hub
[    3.839721] usbcore: registered new device driver usb
[    3.850293] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    3.858476] ehci-platform: EHCI generic platform driver
[    3.864146] ehci-platform 1b000000.usb: EHCI Host Controller
[    3.870035] ehci-platform 1b000000.usb: new USB bus registered, assigned bus number 1
[    3.878241] ehci-platform 1b000000.usb: irq 13, io mem 0x1b000000
[    3.913400] ehci-platform 1b000000.usb: USB 2.0 started, EHCI 1.00
[    3.920523] hub 1-0:1.0: USB hub found
[    3.924746] hub 1-0:1.0: 1 port detected
[    3.929811] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    3.947714] init: - preinit -
[    5.054294] random: jshn: uninitialized urandom read (4 bytes read)
[    5.296972] random: jshn: uninitialized urandom read (4 bytes read)
[    5.542794] random: jshn: uninitialized urandom read (4 bytes read)
[    6.833458] usb 1-1: new high-speed USB device number 2 using ehci-platform
[    6.910670] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    6.916826] IPv6: ADDRCONF(NETDEV_UP): eth0.1: link is not ready
[    6.955943] urandom_read: 4 callbacks suppressed
[    6.955950] random: procd: uninitialized urandom read (4 bytes read)
[    7.954697] eth0: link up (1000Mbps/Full duplex)
[    7.959559] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    7.966356] IPv6: ADDRCONF(NETDEV_CHANGE): eth0.1: link becomes ready
[   10.215718] jffs2: notice: (512) jffs2_build_xattr_subsystem: complete building xattr subsystem, 5 of xdatum (3 unchecked, 2 orphan) and 43 of xref (2 dead, 0 orphan) found.
[   10.237496] mount_root: switching to jffs2 overlay
[   10.264507] overlayfs: upper fs does not support tmpfile.
[   10.278426] urandom-seed: Seeding with /etc/urandom.seed
[   10.384366] eth0: link down
[   10.404713] procd: - early -
[   10.407781] procd: - watchdog -
[   10.964524] random: jshn: uninitialized urandom read (4 bytes read)
[   11.133780] procd: - watchdog -
[   11.137298] procd: - ubus -
[   11.253467] random: jshn: uninitialized urandom read (4 bytes read)
[   11.381003] procd: - init -
[   12.721038] kmodloader: loading kernel modules from /etc/modules.d/*
[   13.041110] urngd: v1.0.2 started.
[   13.098889] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   13.139349] usbcore: registered new interface driver cdc_wdm
[   13.167790] Loading modules backported from Linux version v4.19.137-0-gc076c79e03c6
[   13.175750] Backport generated by backports.git v4.19.137-1-0-g60c3a249
[   13.224707] ip_tables: (C) 2000-2006 Netfilter Core Team
[   13.248417] nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
[   13.422786] usbcore: registered new interface driver usbserial
[   13.428947] usbcore: registered new interface driver usbserial_generic
[   13.435799] usbserial: USB Serial support registered for generic
[   13.454746] random: crng init done
[   13.552182] xt_time: kernel timezone is -0000
[   13.572034] usbcore: registered new interface driver cdc_ether
[   13.608695] usbcore: registered new interface driver cdc_ncm
[   13.684545] usbcore: registered new interface driver huawei_cdc_ncm
[   13.791886] PPP generic driver version 2.4.2
[   13.823468] NET: Registered protocol family 24
[   13.837897] usbcore: registered new interface driver qmi_wwan
[   13.874938] usbcore: registered new interface driver rndis_host
[   13.976231] ath10k 4.19 driver, optimized for CT firmware, probing pci device: 0x3c.
[   14.014644] PCI: Enabling device 0000:00:00.0 (0000 -> 0002)
[   14.020646] ath10k_pci 0000:00:00.0: pci irq legacy oper_irq_mode 1 irq_mode 0 reset_mode 0
[   14.384589] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/fwcfg-pci-0000:00:00.0.txt failed with error -2
[   14.395504] ath10k_pci 0000:00:00.0: Falling back to user helper
[   14.918506] firmware ath10k!fwcfg-pci-0000:00:00.0.txt: firmware_loading_store: map pages failed
[   14.928194] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/pre-cal-pci-0000:00:00.0.bin failed with error -2
[   14.939281] ath10k_pci 0000:00:00.0: Falling back to user helper
[   15.279885] firmware ath10k!pre-cal-pci-0000:00:00.0.bin: firmware_loading_store: map pages failed
[   15.290916] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/QCA988X/hw2.0/ct-firmware-5.bin failed with error -2
[   15.302285] ath10k_pci 0000:00:00.0: Falling back to user helper
[   15.482628] firmware ath10k!QCA988X!hw2.0!ct-firmware-5.bin: firmware_loading_store: map pages failed
[   15.492453] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/QCA988X/hw2.0/ct-firmware-2.bin failed with error -2
[   15.503813] ath10k_pci 0000:00:00.0: Falling back to user helper
[   15.687912] firmware ath10k!QCA988X!hw2.0!ct-firmware-2.bin: firmware_loading_store: map pages failed
[   15.697740] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/QCA988X/hw2.0/firmware-6.bin failed with error -2
[   15.708828] ath10k_pci 0000:00:00.0: Falling back to user helper
[   15.895557] firmware ath10k!QCA988X!hw2.0!firmware-6.bin: firmware_loading_store: map pages failed
[   15.905108] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/QCA988X/hw2.0/firmware-5.bin failed with error -2
[   15.916199] ath10k_pci 0000:00:00.0: Falling back to user helper
[   16.098949] firmware ath10k!QCA988X!hw2.0!firmware-5.bin: firmware_loading_store: map pages failed
[   16.108498] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/QCA988X/hw2.0/firmware-4.bin failed with error -2
[   16.119579] ath10k_pci 0000:00:00.0: Falling back to user helper
[   16.296083] firmware ath10k!QCA988X!hw2.0!firmware-4.bin: firmware_loading_store: map pages failed
[   16.305635] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/QCA988X/hw2.0/firmware-3.bin failed with error -2
[   16.316717] ath10k_pci 0000:00:00.0: Falling back to user helper
[   16.492849] firmware ath10k!QCA988X!hw2.0!firmware-3.bin: firmware_loading_store: map pages failed
[   16.505909] ath10k_pci 0000:00:00.0: qca988x hw2.0 target 0x4100016c chip_id 0x043202ff sub 0000:0000
[   16.515482] ath10k_pci 0000:00:00.0: kconfig debug 0 debugfs 1 tracing 0 dfs 1 testmode 0
[   16.527894] ath10k_pci 0000:00:00.0: firmware ver 10.1-ct-8x-__fW-022-538f0906 api 2 features wmi-10.x,has-wmi-mgmt-tx,mfp,txstatus-noack,wmi-10.x-CT,ratemask-CT,txrate-CT,get-temp-CT,tx-rc-CT,cust-stats-CT,retry-gt2-CT,txrate2-CT,beacon-cb-CT,wmi-block-ack-CT crc32 e1c91a74
[   16.651527] ath10k_pci 0000:00:00.0: Direct firmware load for ath10k/QCA988X/hw2.0/board-2.bin failed with error -2
[   16.662350] ath10k_pci 0000:00:00.0: Falling back to user helper
[   16.772202] firmware ath10k!QCA988X!hw2.0!board-2.bin: firmware_loading_store: map pages failed
[   16.781657] ath10k_pci 0000:00:00.0: board_file api 1 bmi_id N/A crc32 bebc7c08
[   17.737152] ath10k_pci 0000:00:00.0: 10.1 wmi init: vdevs: 16  peers: 127  tid: 256
[   17.754753] ath10k_pci 0000:00:00.0: wmi print 'P 128 V 8 T 410'
[   17.761169] ath10k_pci 0000:00:00.0: wmi print 'msdu-desc: 1424  sw-crypt: 0 ct-sta: 0'
[   17.769469] ath10k_pci 0000:00:00.0: wmi print 'alloc rem: 20984 iram: 25656'
[   17.838692] ath10k_pci 0000:00:00.0: htt-ver 2.1 wmi-op 2 htt-op 2 cal file max-sta 128 raw 0 hwcrypto 1
[   17.851699] ath10k_pci 0000:00:00.0: NOTE:  Firmware DBGLOG output disabled in debug_mask: 0x10000000
[   17.986592] ath: EEPROM regdomain: 0x0
[   17.986598] ath: EEPROM indicates default country code should be used
[   17.986601] ath: doing EEPROM country->regdmn map search
[   17.986614] ath: country maps to regdmn code: 0x3a
[   17.986619] ath: Country alpha2 being used: US
[   17.986622] ath: Regpair used: 0x3a
[   18.031177] usbcore: registered new interface driver option
[   18.037064] usbserial: USB Serial support registered for GSM modem (1-port)
[   18.088802] ath: EEPROM regdomain: 0x0
[   18.088810] ath: EEPROM indicates default country code should be used
[   18.088813] ath: doing EEPROM country->regdmn map search
[   18.088825] ath: country maps to regdmn code: 0x3a
[   18.088830] ath: Country alpha2 being used: US
[   18.088833] ath: Regpair used: 0x3a
[   18.101207] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[   18.102766] ieee80211 phy1: Atheros AR9561 Rev:0 mem=0xb8100000, irq=2
[   18.153750] kmodloader: done loading kernel modules from /etc/modules.d/*
[   25.293539] usb 1-1: USB disconnect, device number 2
[   25.743427] usb 1-1: new high-speed USB device number 3 using ehci-platform
[   26.012040] cdc_ether 1-1:1.0 eth1: register 'cdc_ether' at usb-1b000000.usb-1, CDC Ethernet Device, 00:16:36:51:54:57
[   32.256400] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   32.277675] br-lan: port 1(eth0.1) entered blocking state
[   32.283263] br-lan: port 1(eth0.1) entered disabled state
[   32.289143] device eth0.1 entered promiscuous mode
[   32.294128] device eth0 entered promiscuous mode
[   32.326232] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[   32.384589] IPv6: ADDRCONF(NETDEV_UP): eth0.2: link is not ready
[   33.315056] eth0: link up (1000Mbps/Full duplex)
[   33.319912] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   33.403476] br-lan: port 1(eth0.1) entered blocking state
[   33.409063] br-lan: port 1(eth0.1) entered forwarding state
[   33.415119] IPv6: ADDRCONF(NETDEV_CHANGE): eth0.2: link becomes ready
[   33.574226] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[   34.533687] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[   37.273015] wlan1: authenticate with 0c:9d:92:7d:f9:65
[   37.291837] wlan1: send auth to 0c:9d:92:7d:f9:65 (try 1/3)
[   37.305781] wlan1: authenticated
[   37.314564] wlan1: associate with 0c:9d:92:7d:f9:65 (try 1/3)
[   37.339100] wlan1: RX AssocResp from 0c:9d:92:7d:f9:65 (capab=0x1431 status=0 aid=20)
[   37.347476] wlan1: associated
[   38.357252] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready

ifconfig (connected to Android tether via WiFi)

root@OpenWrt:~# ifconfig
br-lan    Link encap:Ethernet  HWaddr 50:D4:F7:B4:E9:BC
          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fdc4:beaf:34d3::1/60 Scope:Global
          inet6 addr: fe80::52d4:f7ff:feb4:e9bc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3271 errors:0 dropped:0 overruns:0 frame:0
          TX packets:959 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:268283 (261.9 KiB)  TX bytes:147656 (144.1 KiB)

eth0      Link encap:Ethernet  HWaddr 50:D4:F7:B4:E9:BC
          inet6 addr: fe80::52d4:f7ff:feb4:e9bc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3419 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1655 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:340842 (332.8 KiB)  TX bytes:378659 (369.7 KiB)
          Interrupt:4

eth0.1    Link encap:Ethernet  HWaddr 50:D4:F7:B4:E9:BC
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3273 errors:0 dropped:2 overruns:0 frame:0
          TX packets:959 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:268375 (262.0 KiB)  TX bytes:147656 (144.1 KiB)

eth0.2    Link encap:Ethernet  HWaddr 50:D4:F7:B4:E9:BD
          inet6 addr: fe80::52d4:f7ff:feb4:e9bd/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:667 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:221624 (216.4 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:140 errors:0 dropped:0 overruns:0 frame:0
          TX packets:140 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:13469 (13.1 KiB)  TX bytes:13469 (13.1 KiB)

wlan1     Link encap:Ethernet  HWaddr 50:D4:F7:B4:E9:BC
          inet addr:192.168.43.148  Bcast:192.168.43.255  Mask:255.255.255.0
          inet6 addr: fe80::52d4:f7ff:feb4:e9bc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3767 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1568 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1996353 (1.9 MiB)  TX bytes:155492 (151.8 KiB)

Any help or idea are welcome. Thank you!

Looks like the modem port is eth1, just configure it as DHCP client.

@AndrewZ Thank You! The answer was on my face but i couldn't see.
It's working!

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