I have found the origin of why my mobile broad band connection not
always works. It is about the DNS.
Here are two connection attempts. The first one doesn't succeed, but the
second does. Both times the log says that the DNS is configured, but the
first time it is not.
The problem is that network manager not always writes the name servers
to /etc/resolv.conf
The only text that appear in the file in this case is:
---begin---
# Generated by NetworkManager
---end---
If you manually write the name servers to resolv.conf (sudo gedit
/etc/resolv.conf
) as below
---begin---
# Generated by NetworkManager
nameserver 80.251.201.177
nameserver 80.251.201.178
---end---
is works connecting to the mobile gsm broadband, even when nm-tool
says no name servers.
So, in short when the network-manager log says:
---
NetworkManager: <info> Policy set '3 Bredband' (ppp0) as default for routing
and DNS.
---
The routing is configured as expected, but not always the DNS. nm-tool does not
report the DNS, but if you know the DNS you can write it to /etc/resolv.conf
and you can still use the Internet connection.
pat...@ubuntu:~$ export NM_PPP_DEBUG=1
pat...@ubuntu:~$
pat...@ubuntu:~$ # start networkmanager and put log in /tmp/nm.log.txt
pat...@ubuntu:~$ sudo NetworkManager --no-daemon 2>&1 | tee
/tmp/nm.log.txt
[sudo] password for patrik:
NetworkManager: <info> starting...
NetworkManager: <info> modem-manager is now available
NetworkManager: SCPlugin-Ifupdown: init!
NetworkManager: SCPlugin-Ifupdown: update_system_hostname
NetworkManager: SCPluginIfupdown: management mode: unmanaged
NetworkManager: SCPlugin-Ifupdown: devices added (path:
/sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/eth0, iface: eth0)
NetworkManager: SCPlugin-Ifupdown: device added (path:
/sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/eth0, iface:
eth0): no ifupdown configuration found.
NetworkManager: SCPlugin-Ifupdown: devices added (path:
/sys/devices/pci0000:00/0000:00:1c.3/0000:01:00.0/net/wlan0, iface:
wlan0)
NetworkManager: SCPlugin-Ifupdown: device added (path:
/sys/devices/pci0000:00/0000:00:1c.3/0000:01:00.0/net/wlan0, iface:
wlan0): no ifupdown configuration found.
NetworkManager: SCPlugin-Ifupdown: devices added (path:
/sys/devices/pci0000:00/0000:00:1c.3/0000:01:00.0/net/wmaster0, iface:
wmaster0)
NetworkManager: SCPlugin-Ifupdown: device added (path:
/sys/devices/pci0000:00/0000:00:1c.3/0000:01:00.0/net/wmaster0, iface:
wmaster0): no ifupdown configuration found.
NetworkManager: SCPlugin-Ifupdown: devices added (path:
/sys/devices/virtual/net/lo, iface: lo)
NetworkManager: SCPlugin-Ifupdown: device added (path:
/sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration
found.
NetworkManager: SCPlugin-Ifupdown: end _init.
NetworkManager: Loaded plugin ifupdown: (C) 2008 Canonical Ltd. To
report bugs please use the NetworkManager mailing list.
NetworkManager: Loaded plugin keyfile: (c) 2007 - 2008 Red Hat, Inc. To
report bugs please use the NetworkManager mailing list.
NetworkManager: <info> Found radio killswitch rfkill3 (at
/sys/devices/pci0000:00/0000:00:1c.3/0000:01:00.0/ieee80211/phy0/rfkill3)
(driver <unknown>)
NetworkManager: <info> Found radio killswitch rfkill0 (at
/sys/devices/platform/eeepc/rfkill/rfkill0) (driver eeepc)
NetworkManager: <info> Wireless now enabled by radio killswitch
NetworkManager: SCPlugin-Ifupdown: (158018848) ... get_connections.
NetworkManager: SCPlugin-Ifupdown: (158018848) ... get_connections
(managed=false): return empty list.
NetworkManager: Ifupdown: get unmanaged devices count: 0
NetworkManager: <info> (eth0): carrier is OFF
NetworkManager: <info> (eth0): new Ethernet device (driver: 'ATL1E')
NetworkManager: <info> (eth0): exported as
/org/freedesktop/NetworkManager/Devices/0
NetworkManager: <info> (eth0): now managed
NetworkManager: <info> (eth0): device state change: 1 -> 2 (reason 2)
NetworkManager: <info> (eth0): bringing up device.
NetworkManager: <info> (eth0): preparing device.
NetworkManager: <info> (eth0): deactivating device (reason: 2).
NetworkManager: Added default wired connection 'Auto eth0' for
/sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/eth0
NetworkManager: <info> (wlan0): driver supports SSID scans (scan_capa
0x01).
NetworkManager: <info> (wlan0): new 802.11 WiFi device (driver:
'ath5k')
NetworkManager: <info> (wlan0): exported as
/org/freedesktop/NetworkManager/Devices/1
NetworkManager: <info> (wlan0): now managed
NetworkManager: <info> (wlan0): device state change: 1 -> 2 (reason 2)
NetworkManager: <info> (wlan0): bringing up device.
NetworkManager: <info> (wlan0): preparing device.
NetworkManager: <info> (wlan0): deactivating device (reason: 2).
NetworkManager: <info> (ttyUSB0): new GSM device (driver: 'option1')
NetworkManager: <info> (ttyUSB0): exported as
/org/freedesktop/NetworkManager/Devices/2
NetworkManager: <info> (ttyUSB0): now managed
NetworkManager: <info> (ttyUSB0): device state change: 1 -> 2 (reason
2)
NetworkManager: <info> (ttyUSB0): deactivating device (reason: 2).
NetworkManager: flush_routes: assertion `iface_idx >= 0' failed
NetworkManager: flush_addresses: assertion `iface_idx >= 0' failed
NetworkManager: <WARN> default_adapter_cb(): bluez error getting
default adapter: The name org.bluez was not provided by any .service
files
NetworkManager: <info> (ttyUSB0): device state change: 2 -> 3 (reason
0)
NetworkManager: <info> (wlan0): supplicant interface state: starting
-> ready
NetworkManager: <info> (wlan0): device state change: 2 -> 3 (reason 42)
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: <info> Activation (ttyUSB0) starting connection '3
Bredband'
NetworkManager: <info> (ttyUSB0): device state change: 3 -> 4 (reason
0)
NetworkManager: <info> Activation (ttyUSB0) Stage 1 of 5 (Device
Prepare) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 1 of 5 (Device
Prepare) started...
NetworkManager: <info> Activation (ttyUSB0) Stage 1 of 5 (Device
Prepare) complete.
NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device
Configure) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device
Configure) starting...
NetworkManager: <info> (ttyUSB0): device state change: 4 -> 5 (reason
0)
NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device
Configure) successful.
NetworkManager: <info> Activation (ttyUSB0) Stage 3 of 5 (IP Configure
Start) scheduled.
NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device
Configure) complete.
NetworkManager: <info> Activation (ttyUSB0) Stage 3 of 5 (IP Configure
Start) started...
NetworkManager: <info> (ttyUSB0): device state change: 5 -> 7 (reason
0)
NetworkManager: <info> Starting pppd connection
NetworkManager: <debug> [1261221402.044817] nm_ppp_manager_start():
Command line: /usr/sbin/pppd nodetach lock nodefaultroute ttyUSB0
noipdefault noauth usepeerdns lcp-echo-failure 0 lcp-echo-interval 0
ipparam /org/freedesktop/NetworkManager/PPP/0 plugin /usr/lib/pppd/2.4.4
/nm-pppd-plugin.so
NetworkManager: <debug> [1261221402.055088] nm_ppp_manager_start(): ppp
started with pid 2820
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP6 Configure
Get) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 3 of 5 (IP Configure
Start) complete.
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP6 Configure
Get) started...
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP6 Configure
Get) complete.
Plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so loaded.
** Message: nm-ppp-plugin: (plugin_init): initializing
** Message: nm-ppp-plugin: (nm_phasechange): status 3 / phase 'serial
connection'
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
** Message: nm-ppp-plugin: (nm_phasechange): status 5 / phase
'establish'
NetworkManager: SCPlugin-Ifupdown: devices added (path:
/sys/devices/virtual/net/ppp0, iface: ppp0)
NetworkManager: SCPlugin-Ifupdown: device added (path:
/sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration
found.
** Message: nm-ppp-plugin: (nm_phasechange): status 6 / phase
'authenticate'
** Message: nm-ppp-plugin: (get_credentials): passwd-hook, requesting
credentials...
** Message: nm-ppp-plugin: (get_credentials): got credentials from
NetworkManager
CHAP authentication succeeded
CHAP authentication succeeded
** Message: nm-ppp-plugin: (nm_phasechange): status 8 / phase 'network'
Could not determine remote IP address: defaulting to 10.64.64.64
Cannot determine ethernet address for proxy ARP
local IP address 95.209.83.239
remote IP address 10.64.64.64
** Message: nm-ppp-plugin: (nm_phasechange): status 9 / phase 'running'
** Message: nm-ppp-plugin: (nm_ip_up): ip-up event
** Message: nm-ppp-plugin: (nm_ip_up): sending Ip4Config to
NetworkManager...
NetworkManager: <info> PPP manager(IP Config Get) reply received.
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP4 Configure
Get) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP4 Configure
Get) started...
NetworkManager: <info> Activation (ttyUSB0) Stage 5 of 5 (IP Configure
Commit) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP4 Configure
Get) complete.
NetworkManager: <info> Activation (ttyUSB0) Stage 5 of 5 (IP Configure
Commit) started...
NetworkManager: <info> (ttyUSB0): device state change: 7 -> 8 (reason
0)
NetworkManager: <info> Policy set '3 Bredband' (ppp0) as default for
routing and DNS.
NetworkManager: <info> Activation (ttyUSB0) successful, device
activated.
NetworkManager: <info> Activation (ttyUSB0) Stage 5 of 5 (IP Configure
Commit) complete.
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: <info> (ttyUSB0): device state change: 8 -> 3 (reason
39)
NetworkManager: <info> (ttyUSB0): deactivating device (reason: 39).
-- Error received: Numerical result out of range
-- Original message: type=0x19 length=56 flags=<REQUEST,ACK> sequence-
nr=1261221410 pid=4197112
NetworkManager: <WARN> check_one_route(): (ppp0) error -34 returned
from rtnl_route_del(): Sucess
Terminating on signal 15
** Message: nm-ppp-plugin: (nm_phasechange): status 10 / phase
'terminate'
** Message: nm-ppp-plugin: (nm_phasechange): status 8 / phase 'network'
Connect time 2.3 minutes.
Sent 0 bytes, received 0 bytes.
** Message: nm-ppp-plugin: (nm_phasechange): status 5 / phase
'establish'
** Message: nm-ppp-plugin: (nm_phasechange): status 11 / phase
'disconnect'
Connection terminated.
NetworkManager: SCPlugin-Ifupdown: devices removed (path:
/sys/devices/virtual/net/ppp0, iface: ppp0)
** Message: nm-ppp-plugin: (nm_phasechange): status 1 / phase 'dead'
** Message: nm-ppp-plugin: (nm_exit_notify): cleaning up
NetworkManager: <debug> [1261221549.001697] ensure_killed(): waiting for
ppp pid 2820 to exit
NetworkManager: <debug> [1261221549.002078] ensure_killed(): ppp pid
2820 cleaned up
NetworkManager: <info> Activation (ttyUSB0) starting connection '3
Bredband'
NetworkManager: <info> (ttyUSB0): device state change: 3 -> 4 (reason
0)
NetworkManager: <info> Activation (ttyUSB0) Stage 1 of 5 (Device
Prepare) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 1 of 5 (Device
Prepare) started...
NetworkManager: <info> Activation (ttyUSB0) Stage 1 of 5 (Device
Prepare) complete.
NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device
Configure) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device
Configure) starting...
NetworkManager: <info> (ttyUSB0): device state change: 4 -> 5 (reason
0)
NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device
Configure) successful.
NetworkManager: <info> Activation (ttyUSB0) Stage 3 of 5 (IP Configure
Start) scheduled.
NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device
Configure) complete.
NetworkManager: <info> Activation (ttyUSB0) Stage 3 of 5 (IP Configure
Start) started...
NetworkManager: <info> (ttyUSB0): device state change: 5 -> 7 (reason
0)
NetworkManager: <info> Starting pppd connection
NetworkManager: <debug> [1261221564.753815] nm_ppp_manager_start():
Command line: /usr/sbin/pppd nodetach lock nodefaultroute ttyUSB0
noipdefault noauth usepeerdns lcp-echo-failure 0 lcp-echo-interval 0
ipparam /org/freedesktop/NetworkManager/PPP/1 plugin /usr/lib/pppd/2.4.4
/nm-pppd-plugin.so
NetworkManager: <debug> [1261221564.780963] nm_ppp_manager_start(): ppp
started with pid 2923
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP6 Configure
Get) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 3 of 5 (IP Configure
Start) complete.
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP6 Configure
Get) started...
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP6 Configure
Get) complete.
Plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so loaded.
** Message: nm-ppp-plugin: (plugin_init): initializing
** Message: nm-ppp-plugin: (nm_phasechange): status 3 / phase 'serial
connection'
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
** Message: nm-ppp-plugin: (nm_phasechange): status 5 / phase
'establish'
** Message: nm-ppp-plugin: (nm_phasechange): status 6 / phase
'authenticate'
** Message: nm-ppp-plugin: (get_credentials): passwd-hook, requesting
credentials...
NetworkManager: SCPlugin-Ifupdown: devices added (path:
/sys/devices/virtual/net/ppp0, iface: ppp0)
NetworkManager: SCPlugin-Ifupdown: device added (path:
/sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration
found.
** Message: nm-ppp-plugin: (get_credentials): got credentials from
NetworkManager
CHAP authentication succeeded
CHAP authentication succeeded
** Message: nm-ppp-plugin: (nm_phasechange): status 8 / phase 'network'
Could not determine remote IP address: defaulting to 10.64.64.64
Cannot determine ethernet address for proxy ARP
local IP address 95.209.204.226
remote IP address 10.64.64.64
primary DNS address 80.251.201.177
secondary DNS address 80.251.201.178
** Message: nm-ppp-plugin: (nm_phasechange): status 9 / phase 'running'
** Message: nm-ppp-plugin: (nm_ip_up): ip-up event
** Message: nm-ppp-plugin: (nm_ip_up): sending Ip4Config to
NetworkManager...
NetworkManager: <info> PPP manager(IP Config Get) reply received.
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP4 Configure
Get) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP4 Configure
Get) started...
NetworkManager: <info> Activation (ttyUSB0) Stage 5 of 5 (IP Configure
Commit) scheduled...
NetworkManager: <info> Activation (ttyUSB0) Stage 4 of 5 (IP4 Configure
Get) complete.
NetworkManager: <info> Activation (ttyUSB0) Stage 5 of 5 (IP Configure
Commit) started...
NetworkManager: <info> (ttyUSB0): device state change: 7 -> 8 (reason
0)
NetworkManager: <info> Policy set '3 Bredband' (ppp0) as default for
routing and DNS.
NetworkManager: <info> Activation (ttyUSB0) successful, device
activated.
NetworkManager: <info> Activation (ttyUSB0) Stage 5 of 5 (IP Configure
Commit) complete.
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
NetworkManager: Tried to set deprecated property gsm/band
** Changed in: network-manager-applet (Ubuntu)
Status: Invalid => New
--
mobile broadband does not work when REconnected
https://bugs.launchpad.net/bugs/478530
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