network manager has gone crazy

[lee]

Tim <ignored_mailbox at yahoo.com.au> writes:

> On Sat, 2012-11-10 at 17:05 +0100, lee wrote:
>> apparently network manager continues to overwrite /etc/resolv.conf
>> with incorrect data.  Adjusting it with system-config-network doesn't
>> help.
>>  
>> ... and the copies of that file under the different names are all the
>> same.  After some time, /etc/resolv.conf will be empty, and it
>> sometimes is missing the "search" entry.
>>  
>> Why is the network manager going crazy and doesn't stick with the
>> information I'm giving it, and how do I fix this?  Name resolution
>> going down because /etc/resolv.conf keeps getting overwritten causes
>> very annoying interruptions.
>
> _EXACTLY_ how are you giving it the data?

I was using system-config-network and editing some files when it didn't
work.

> * Are you configuring network manager, through its own interface?

I thought system-config-network is the interface for it.  Now my theory
is that it is perhaps not and that networkmanager conflicts with it.

> * Are you expecting network manager to handle data that you've manually
> shoved into /etc/resolv.conf?  (That isn't going to work.)

no

> * Are you configuring it through your network's DHCP server?

No, I'm not using dhcp.

> Another point that springs to mind:  A common problem with people
> getting random DHCP client configuration is having two DHCP servers
> running on their LAN.  This is a bad idea, unless one of them is
> configured to work as a slave to the other.  It's not unusual for people
> to connect two devices that can work as a DHCP server, perhaps
> accidentally; or they thought one the servers was disabled, but it's
> actually running.
>
> I've been using NetworkManager on several different releases, for many
> years, and I haven't had any of the problems that I see people commonly
> write about.  But I have seen plenty of people trying to bash it about,
> force it to do something in a daft way, and expect it to work.

Another problem is the lack of documentation ...

Where does networkmanager store it's configuration?  How do you
configure it?


-- 
Fedora 17