<div dir="ltr">Thanks! With patch script update, it's working fine as expected. <div> </div><div>Thanks once again. </div><div> </div><div>Regards,</div></div><div class="gmail_extra"> <div class="gmail_quote">On Thu, Aug 6, 2015 at 4:45 PM, Aleksander Morgado <<a href="mailto:aleksander@aleksander.es" target="_blank">aleksander@aleksander.es</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hey, <div><div class="h5"> On Thu, Aug 6, 2015 at 10:50 PM, Kavula Suresh <<a href="mailto:kavulas@gmail.com">kavulas@gmail.com</a>> wrote: > I have a problem with the Sierra MC7354 Modem and libqmi drivers. I can > establish connection with qmicli commands. After connecting network, I don’t > get ip from service provider (with dhclient wwan0) and disconnects network > after 1 or 2 minutes. Here is the command summary used: > > # qmicli -d /dev/cdc-wdm0 --wds-start-network=VZWINTERNET > --client-no-release-cid --wds-follow-network > [/dev/cdc-wdm0] Network started > Packet data handle: '1137907944' > > Ctrl+C will stop the network > [/dev/cdc-wdm0] Connection status: 'connected' > [/dev/cdc-wdm0] Connection status: 'connected' > [/dev/cdc-wdm0] Connection status: 'connected' > [/dev/cdc-wdm0] Connection status: 'connected' > [/dev/cdc-wdm0] Connection status: 'connected' > [/dev/cdc-wdm0] Connection status: 'connected' > [/dev/cdc-wdm0] Connection status: 'disconnected' > [/dev/cdc-wdm0] Stopping after detecting disconnection > Network cancelled... releasing resources > error: couldn't stop network: QMI protocol error (26): 'NoEffect' > [/dev/cdc-wdm0] Client ID not released: > Service: 'wds' > CID: '9' > > > > After issuing command: > > ifconfig -a > > wwan0 Link encap:Ethernet HWaddr 3A:65:0F:F1:01:E3 > inet6 addr: fe80::3865:fff:fef1:1e3/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:0 errors:0 dropped:0 overruns:0 frame:0 > TX packets:104 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:0 (0.0 B) TX bytes:32124 (31.3 KiB) > > and > > # dhclient -d -4 wwan0 > Internet Systems Consortium DHCP Client 4.1-ESV-R8 > Copyright 2004-2013 Internet Systems Consortium. > All rights reserved. > For info, please visit <a href="https://www.isc.org/software/dhcp/" rel="noreferrer" target="_blank">https://www.isc.org/software/dhcp/</a> > > Listening on LPF/wwan0/3a:65:0f:f1:01:e3 > Sending on LPF/wwan0/3a:65:0f:f1:01:e3 > Sending on Socket/fallback > DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 3 > DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 5 > DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 7 > DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 8 > DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 13 > DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 8 > DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 14 > DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 3 > No DHCPOFFERS received. > No working leases in persistent database - sleeping. > > Any suggestions would be help to make wwan0 broadband connection in forever > mode. > </div></div>Assuming you're not using libqmi git master, go apply this patch here and retry ,please: <a href="http://cgit.freedesktop.org/libqmi/commit/?id=4a82bb9be84861e5098d1c1482b16f60b2b3e449" rel="noreferrer" target="_blank">http://cgit.freedesktop.org/libqmi/commit/?id=4a82bb9be84861e5098d1c1482b16f60b2b3e449</a> The MC7354 shows up with 2 pairs of QMI+WWAN pairs; one of them is by default set to raw-ip; the other one is set to 802.3.The kernel driver expects it to be 802.3, so you'll need to either choose the QMI+WWAN pair which is already in 802.3, or otherwise, unconditionally switch to 802.3 before connecting (with that patch). Without more info that's what I would suggest to do for now. -- Aleksander <a href="https://aleksander.es" rel="noreferrer" target="_blank">https://aleksander.es</a> </blockquote></div> </div>