USB dongle connected but no Internet

asked 2017-08-14 16:04:55 -0500

bionan2017 gravatar image

I have a usb dongle K3806-Z (ZTE).

When attaching the USB stick the network manager recognizes it and the connection is successful, with IP, default gateway and DNS servers obtained automatically by DHCP.

Everything seems normal however I do not have internet access.

I'm using Fedora 26 with cinammon desktop.

The USB dongle it's OK (I tested in a Windows 7 machine) and a shutdown the firewall service.

Thanks for any help.

I leave here a result of the dmesg command:

New USB device strings: Mfr=2, Product=1, SerialNumber=3
[   95.500805] usb 1-1.2: Product: K3806-Z
[   95.500807] usb 1-1.2: Manufacturer: Vodafone (ZTE)
[   95.500809] usb 1-1.2: SerialNumber: F2791AD3456DFEB1637034872EDC5D2669F3A7F7
[   95.545730] usb-storage 1-1.2:1.0: USB Mass Storage device detected
[   95.545814] scsi host6: usb-storage 1-1.2:1.0
[   95.545898] usbcore: registered new interface driver usb-storage
[   95.548194] usbcore: registered new interface driver uas
[   96.274174] usb 1-1.2: USB disconnect, device number 8
[  102.589767] usb 1-1.2: new high-speed USB device number 9 using ehci-pci
[  102.669101] usb 1-1.2: New USB device found, idVendor=19d2, idProduct=1015
[  102.669103] usb 1-1.2: New USB device strings: Mfr=3, Product=2, SerialNumber=4
[  102.669104] usb 1-1.2: Product: K3806-Z
[  102.669105] usb 1-1.2: Manufacturer: Vodafone (ZTE)
[  102.669106] usb 1-1.2: SerialNumber: F2791AD3456DFEB1637034872EDC5D2669F3A7F7
[  102.669944] usb-storage 1-1.2:1.7: USB Mass Storage device detected
[  102.670046] scsi host6: usb-storage 1-1.2:1.7
[  102.693503] cdc_acm 1-1.2:1.1: ttyACM0: USB ACM device
[  102.693851] cdc_acm 1-1.2:1.3: ttyACM1: USB ACM device
[  102.694470] usbcore: registered new interface driver cdc_acm
[  102.694472] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[  102.702055] cdc_ether 1-1.2:1.5 wwan0: register 'cdc_ether' at usb-0000:00:1a.0-1.2, Mobile Broadband Network Device, 02:6d:fe:b1:63:70
[  102.702089] usbcore: registered new interface driver cdc_ether
[  102.706544] cdc_ether 1-1.2:1.5 wwp0s26u1u2i5: renamed from wwan0
[  103.678590] scsi 6:0:0:0: CD-ROM            Vodafone USB SCSI CD-ROM  0001 PQ: 0 ANSI: 0
[  103.678960] scsi 6:0:0:1: Direct-Access     Vodafone Storage          0001 PQ: 0 ANSI: 0
[  103.680088] sr 6:0:0:0: [sr0] scsi3-mmc drive: 0x/0x caddy
[  103.680090] cdrom: Uniform CD-ROM driver Revision: 3.20
[  103.680246] sr 6:0:0:0: Attached scsi CD-ROM sr0
[  103.680425] sr 6:0:0:0: Attached scsi generic sg2 type 5
[  103.680638] sd 6:0:0:1: Attached scsi generic sg3 type 0
[  103.683096] sd 6:0:0:1: [sdc] Attached SCSI removable disk
[  113.685666] cdc_ether 1-1.2:1.5 wwp0s26u1u2i5: kevent 12 may have been dropped
[  113.685898] cdc_ether 1-1.2:1.5 wwp0s26u1u2i5: kevent 12 may have been dropped
[  113.686223] cdc_ether 1-1.2:1.5 wwp0s26u1u2i5: kevent 12 may have been dropped
[  134.087151] r8169 0000:02:00.0 enp2s0: link down
[  197.710580] IPv6: ADDRCONF(NETDEV_UP): wwp0s26u1u2i5: link is not ready ...
(more)
edit retag flag offensive close merge delete

Comments

I don't know why you're not connecting, but I do know that it's not your firewall because stopping it doesn't help. If you haven't turned it back on yet, please do so for your own safety. Also, please run this command in a terminal and report the response: ping -c 4 23.195.224.231 because this will tell me if you're not resolving DNS or not getting out at all.

sideburns gravatar imagesideburns ( 2017-08-14 17:23:44 -0500 )edit

Thank you for your help and your concern about my safety. It's strange: when attaching the usb stick, i get ip address, default gateway and the ips of dns servers... everything by DHCP and everything necessary for a working internet. However i cannot ping any machine in internet... as it i was disconnected...and, no, i can't get response of ping command.... My network settings that i a get from DHCP are correct (because a get the same values when a use the use stick in a windows machine): IP: 5.43.13.141 GW: 5.43.13.140 DNS: 87.103.113.87, 87.103.113.145

bionan2017 gravatar imagebionan2017 ( 2017-08-14 19:16:33 -0500 )edit
1

Here you can configure your usb modem... https://unix.stackexchange.com/questi...

davidva gravatar imagedavidva ( 2017-08-14 20:08:26 -0500 )edit

OK, try this: sudo traceroute -I 23.195.224.231 and let me know if it reaches that server or just fails with lines of * * *. The real important thing will be to learn if it gets past your modem or not.

sideburns gravatar imagesideburns ( 2017-08-14 20:58:06 -0500 )edit

Thank you davidva. I will try it. Thank you sideburns. No, just fails...

bionan2017 gravatar imagebionan2017 ( 2017-08-15 02:47:53 -0500 )edit