3G Modem DHCP time out

[Emmanuel Riboulet-Deyris <erd lastree net>]

Hello,

I'm running FC18 (kernel 3.8.4-202.fc18.x86_64) on a laptop with Ericson
H5321gw. The 3G modem was working fine (tested under windows 8, FC18
right now with wvdial (ppp connection) and networkmanager when I
installed FC18 in January). But after an update (modem-manager 0.6 &
network-manager 0.9.8) I'm not able to make things working well any more
and I get this log on ''/var/log/messages'' :

Mar 24 16:32:45 folia NetworkManager[768]: <info> Activation (wwan0)
starting connection '****my APN***'
Mar 24 16:32:45 folia NetworkManager[768]: <info> (wwan0): device state
change: disconnected -> prepare (reason 'none') [30 40 0]
Mar 24 16:32:45 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 1 of 5 (Device Prepare) scheduled...
Mar 24 16:32:45 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 1 of 5 (Device Prepare) started...
Mar 24 16:32:45 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 1 of 5 (Device Prepare) complete.
Mar 24 16:32:46 folia dbus-daemon[717]: modem-manager[824]: <info> 
Modem /org/freedesktop/ModemManager/Modems/0: state changed (registered
-> connecting)
Mar 24 16:32:46 folia modem-manager[824]: <info>  Modem
/org/freedesktop/ModemManager/Modems/0: state changed (registered ->
connecting)
Mar 24 16:32:51 folia dbus-daemon[717]: modem-manager[824]: <info> 
Modem /org/freedesktop/ModemManager/Modems/0: state changed (connecting
-> connected)
Mar 24 16:32:51 folia modem-manager[824]: <info>  Modem
/org/freedesktop/ModemManager/Modems/0: state changed (connecting ->
connected)
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 2 of 5 (Device Configure) scheduled...
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 2 of 5 (Device Configure) starting...
Mar 24 16:32:51 folia NetworkManager[768]: <info> (wwan0): device state
change: prepare -> config (reason 'none') [40 50 0]
Mar 24 16:32:51 folia NetworkManager[768]: <info> (wwan0): bringing up
device.
Mar 24 16:32:51 folia avahi-daemon[715]: Registering new address record
for fe80::30f0:45ff:fe7f:b2f on wwan0.*.
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 2 of 5 (Device Configure) successful.
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 2 of 5 (Device Configure) complete.
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 3 of 5 (IP Configure Start) scheduled.
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 3 of 5 (IP Configure Start) started...
Mar 24 16:32:51 folia NetworkManager[768]: <info> (wwan0): device state
change: config -> ip-config (reason 'none') [50 70 0]
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Beginning DHCPv4 transaction (timeout in 45 seconds)
Mar 24 16:32:51 folia NetworkManager[768]: <info> dhclient started with
pid 23569
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 3 of 5 (IP Configure Start) complete.
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 4 of 5 (IPv6 Configure Timeout) started...
Mar 24 16:32:51 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 4 of 5 (IPv6 Configure Timeout) complete.
Mar 24 16:32:51 folia dhclient[23569]: Internet Systems Consortium DHCP
Client 4.2.5
Mar 24 16:32:51 folia dhclient[23569]: Copyright 2004-2013 Internet
Systems Consortium.
Mar 24 16:32:51 folia dhclient[23569]: All rights reserved.
Mar 24 16:32:51 folia dhclient[23569]: For info, please visit
https://www.isc.org/software/dhcp/
Mar 24 16:32:51 folia dhclient[23569]:
Mar 24 16:32:51 folia NetworkManager[768]: <info> (wwan0): DHCPv4 state
changed nbi -> preinit
Mar 24 16:32:51 folia dhclient[23569]: Listening on
LPF/wwan0/**:**:**:**:**:**
Mar 24 16:32:51 folia dhclient[23569]: Sending on  
LPF/wwan0/**:**:**:**:**:**
Mar 24 16:32:51 folia dhclient[23569]: Sending on   Socket/fallback
Mar 24 16:32:51 folia dhclient[23569]: DHCPDISCOVER on wwan0 to
255.255.255.255 port 67 interval 4 (xid=0x7cd70235)
Mar 24 16:32:55 folia dhclient[23569]: DHCPDISCOVER on wwan0 to
255.255.255.255 port 67 interval 9 (xid=0x7cd70235)
Mar 24 16:32:55 folia dhclient[5652]: DHCPDISCOVER on wwan0 to
255.255.255.255 port 67 interval 21 (xid=0x3da7b652)
Mar 24 16:33:04 folia dhclient[23569]: DHCPDISCOVER on wwan0 to
255.255.255.255 port 67 interval 7 (xid=0x7cd70235)
Mar 24 16:33:11 folia dhclient[23569]: DHCPDISCOVER on wwan0 to
255.255.255.255 port 67 interval 13 (xid=0x7cd70235)
Mar 24 16:33:16 folia dhclient[5652]: DHCPDISCOVER on wwan0 to
255.255.255.255 port 67 interval 12 (xid=0x3da7b652)
Mar 24 16:33:24 folia dhclient[23569]: DHCPDISCOVER on wwan0 to
255.255.255.255 port 67 interval 20 (xid=0x7cd70235)
Mar 24 16:33:28 folia dhclient[5652]: DHCPDISCOVER on wwan0 to
255.255.255.255 port 67 interval 9 (xid=0x3da7b652)
Mar 24 16:33:36 folia NetworkManager[768]: <warn> (wwan0): DHCPv4
request timed out.
Mar 24 16:33:36 folia NetworkManager[768]: <info> (wwan0): canceled DHCP
transaction, DHCP client pid 23569
Mar 24 16:33:37 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Mar 24 16:33:37 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 4 of 5 (IPv4 Configure Timeout) started...
Mar 24 16:33:37 folia NetworkManager[768]: <info> (wwan0): device state
change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Mar 24 16:33:37 folia NetworkManager[768]: <warn> Activation (wwan0)
failed for connection '***APN***'
Mar 24 16:33:37 folia NetworkManager[768]: <info> Activation (wwan0)
Stage 4 of 5 (IPv4 Configure Timeout) complete.
Mar 24 16:33:37 folia NetworkManager[768]: <info> (wwan0): device state
change: failed -> disconnected (reason 'none') [120 30 0]
Mar 24 16:33:37 folia NetworkManager[768]: <info> (wwan0): deactivating
device (reason 'none') [0]
Mar 24 16:33:37 folia modem-manager[824]: <info>  Modem
/org/freedesktop/ModemManager/Modems/0: state changed (connected ->
disconnecting)
Mar 24 16:33:37 folia avahi-daemon[715]: Withdrawing address record for
**:**:**:**:**:**:** on wwan0.
Mar 24 16:33:37 folia dhclient[5652]: receive_packet failed on wwan0:
Network is down
Mar 24 16:33:37 folia dbus-daemon[717]: modem-manager[824]: <info> 
Modem /org/freedesktop/ModemManager/Modems/0: state changed (connected
-> disconnecting)

I cannot figure out what's the problem is...

I hope someone would have a diagnostic ?

Thanks in advance,

Emmanuel