Modemmanager doesn't make the ip-settings. This is normally done by networkmanager or by yourself. See mmcli -b 0 The hint using ip instead of ifconfig was no joke! Ifconfig doesn't list down interfaces. Ip l does. The simplest thing in your case seems to me, is to starting dhclient/dhcpcd or something similar on your wwan-device. Alternatively try to do the settings according to mmcli -b 0 via ip manually. Thomas <div class="gmail_extra"> <div class="gmail_quote">Am 14.08.2016 15:52 schrieb Ajay Garg <ajaygargnsit@gmail.com>: <blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>Hi All. This post is mostly similar to <a href="https://lists.freedesktop.org/archives/libqmi-devel/2016-August/001647.html">https://lists.freedesktop.org/archives/libqmi-devel/2016-August/001647.html</a>, except there I am trying with "qmicli" throughout, and here I try with "mmcli" throughout. </div>Anyways, for brevity, I will put in the complete relevant-content here too. <pre>I switched my modem into QMI-mode, and rebooted the SOC (Ubuntu-on-SSD-interfaced-with-modem). After reboot, following is the information ::</pre> <pre>== Pre-Requisites are in place == ############################################################ root@logic-desktop:~# lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 1199:68a2 Sierra Wireless, Inc. Bus 001 Device 004: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 001 Device 003: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse Bus 001 Device 002: ID 046d:c31d Logitech, Inc. Media Keyboard K200 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub root@logic-desktop:~# ps -aux | grep qmi-proxy root 865 0.0 0.1 28032 5732 ? Sl 18:58 0:00 /usr/lib/libqmi/qmi-proxy root 2563 0.0 0.0 4692 2072 pts/2 S+ 19:05 0:00 grep --color=auto qmi-proxy root@logic-desktop:~# lsmod | grep sierra root@logic-desktop:~# lsmod | grep qcserial qcserial 13006 0 usb_wwan 19306 1 qcserial usbserial 38972 2 qcserial,usb_wwan root@logic-desktop:~# lsmod | grep qmi_wwan qmi_wwan 21469 0 cdc_wdm 18518 2 qmi_wwan usbnet 37829 1 qmi_wwan ############################################################ == Initial-Interface Listing == ############################################################ root@logic-desktop:~# ifconfig eth1 Link encap:Ethernet HWaddr 00:90:0b:4c:65:fa UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Memory:d0700000-d071ffff eth2 Link encap:Ethernet HWaddr 00:90:0b:4c:65:fb inet6 addr: fe80::290:bff:fe4c:65fb/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:3910 errors:0 dropped:0 overruns:0 frame:0 TX packets:3448 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3143983 (3.1 MB) TX bytes:540896 (540.8 KB) Memory:d0600000-d061ffff 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:2398 errors:0 dropped:0 overruns:0 frame:0 TX packets:2398 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:188946 (188.9 KB) TX bytes:188946 (188.9 KB) ############################################################ == Connection-Establishment == ############################################################ root@logic-desktop:~# mmcli -m 0 -e successfully enabled the modem root@logic-desktop:~# mmcli -m 0 --simple-connect="apn=<a href="http://airtelgprs.com">airtelgprs.com</a>" successfully connected the modem root@logic-desktop:~# mmcli -m 0 /org/freedesktop/ModemManager1/Modem/0 (device id '6eef1b98754cbd133c7a802b89bfcccb55c2f464') ------------------------- Hardware | manufacturer: 'QUALCOMM INCORPORATED' | model: '0' | revision: 'SCAUTNZ 1 [Oct 21 2011 09:30:38]' | supported: 'gsm-umts' | current: 'gsm-umts' | equipment id: '013087000947186' ------------------------- System | device: '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.1' | drivers: 'qmi_wwan, qcserial' | plugin: 'Sierra' | primary port: 'cdc-wdm0' | ports: 'ttyUSB1 (at), cdc-wdm0 (qmi), wwan0 (net)' ------------------------- Numbers | own : 'unknown' ------------------------- Status | lock: 'sim-pin2' | unlock retries: 'sim-pin (10), sim-pin2 (3), sim-puk (10), sim-puk2 (10)' | state: 'connected' | power state: 'on' | access tech: 'gsm' | signal quality: '71' (recent) ------------------------- Modes | supported: 'allowed: 2g; preferred: none | allowed: 3g; preferred: none | allowed: 2g, 3g; preferred: none | allowed: 2g, 3g; preferred: 2g | allowed: 2g, 3g; preferred: 3g' | current: 'allowed: 2g, 3g; preferred: none' ------------------------- Bands | supported: 'dcs, egsm, pcs, g850, u2100, u1900, u800, u850' | current: 'dcs, egsm, pcs, g850, u2100, u1900, u800, u850' ------------------------- IP | supported: 'ipv4, ipv6, ipv4v6' ------------------------- 3GPP | imei: '013087000947186' | enabled locks: 'none' | operator id: '659957' | operator name: 'unknown' | subscription: 'unknown' | registration: 'home' ------------------------- SIM | path: '/org/freedesktop/ModemManager1/SIM/0' ------------------------- Bearers | paths: '/org/freedesktop/ModemManager1/Bearer/0' ############################################################ == Latest-Interface Listing == ############################################################ root@logic-desktop:~# ifconfig eth0 Link encap:Ethernet HWaddr 00:90:0b:4c:65:fa UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Memory:d0700000-d071ffff eth2 Link encap:Ethernet HWaddr 00:90:0b:4c:65:fb inet6 addr: fe80::290:bff:fe4c:65fb/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:2023 errors:0 dropped:0 overruns:0 frame:0 TX packets:1819 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1561030 (1.5 MB) TX bytes:318922 (318.9 KB) Memory:d0600000-d061ffff 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:948 errors:0 dropped:0 overruns:0 frame:0 TX packets:948 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:77992 (77.9 KB) TX bytes:77992 (77.9 KB) ############################################################</pre> <pre>== Network-Trials == </pre><pre>############################################################ root@logic-desktop:~# telnet <a href="http://www.google.com">www.google.com</a> 80 telnet: could not resolve <a href="http://www.google.com/80">www.google.com/80</a>: Name or service not known </pre>root@logic-desktop:~# ping <a href="http://www.google.com">www.google.com</a> ping: unknown host <a href="http://www.google.com">www.google.com</a> ############################################################ </div>What am I missing? </div>Will be grateful fo pointers. <div><div> <div>Thanks and Regards, <div>Ajay </div> </div></div></div></div> </blockquote></div> </div>