[arch-general] Bug NetworkManager when restart NetworkManager service

[Kyle Terrien]

On 04/08/2014 04:31 AM, Maykel Franco wrote:
> Hi, I change for example dns in networkmanager, when restart
> NetworkManager , "systemctl restart NetworkManager" the network not
> works...
> 
> [maykel at maykel-arch ~]$ sudo systemctl status NetworkManager
> ● NetworkManager.service - Network Manager
>    Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled)
>    Active: active (running) since mar 2014-04-08 12:24:13 CEST; 19s ago
>  Main PID: 3082 (NetworkManager)
>    CGroup: /system.slice/NetworkManager.service
>            ├─1223 /usr/bin/dhcpcd -B -K -L -G -c
> /usr/lib/networkmanager/nm-dhcp-client.action enp4s0f2
>            └─3082 /usr/bin/NetworkManager --no-daemon
> 
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info> (enp4s0f2):
> DHCPv4 client pid 3093 exited with status 1
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info> Activation
> (enp4s0f2) Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info> Activation
> (enp4s0f2) Stage 4 of 5 (IPv4 Configure Timeout) started...
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info> (enp4s0f2):
> device state change: ip-config -> failed (reason
> 'ip-config-unavailable') [70 120 5]
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info>
> NetworkManager state is now DISCONNECTED
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info> Marking
> connection 'MO2O' invalid.
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <warn> Activation
> (enp4s0f2) failed for connection 'MO2O'
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info> Activation
> (enp4s0f2) Stage 4 of 5 (IPv4 Configure Timeout) complete.
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info> (enp4s0f2):
> device state change: failed -> disconnected (reason 'none') [120 30 0]
> abr 08 12:24:22 maykel-arch NetworkManager[3082]: <info> (enp4s0f2):
> deactivating device (reason 'none') [0]
> 
> I have reboot my computer for network on again.
> 
> Is a bug networkmanager?
> 
> The version is:
> 
> maykel-arch /home/maykel # NetworkManager --version
> 0.9.8.8
> 
> Thanks in advanced.
> 

I did some more poking around. This is a bug in NetworkManager [1]. When
dhcpcd is running before NetworkManager (e.g. left running by a previous
instance of NetworkManager), NetworkManager does not properly restart
dhcpcd.

The workaround is to install dhclient.

[1] https://bugzilla.gnome.org/show_bug.cgi?id=723746

--Kyle

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