Not getting IP Address after wds-start-network

[Kavula Suresh]

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 https://www.isc.org/software/dhcp/

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.

Thanks.
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