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Old 19th May 2017, 06:05 PM
Mageta52 Offline
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F18 Networking confusion

I'm hoping to get some clarification on the way networking functions in Fedora 18. If I edit the config file for an interface under /etc/sysconfig/network-scripts, and then go in through the GUI and change the IP address information, the changes made there will always take precedence over the changes made manually in the ifcfg files under /etc/sysconfig/network-scripts.

I've had the same problem in CentOS, and I've been told that the GUI uses network manager, which doesn't use the config files under /etc/sysconfig/network-scripts.

Is there a reason that configuration files exist in multiple places to control the network interfaces? It just seems confusing and convoluted to me.
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Old 21st May 2017, 06:24 AM
nsnbm Offline
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Re: F18 Networking confusion

Normally the user needs to use either NetworkManager or network, but not both because one can overwrite the other's files. If it's network that you wish to use, then editing the config files will config the system. You can use the GUI program: system-config-network to set up network and it will go some way to editing those files which may be enough to get the network going. If not, then tweaking the config files usually gets the user up, and there's plenty of info on those files. On the other hand, NetworkManager has it's own GUI that you can use, and also has command line programs, but often the GUI gets things going. I don't use NetworkManager, but from my experience with others who do, they say it deals with wifi better.
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Old 22nd May 2017, 09:58 PM
Mageta52 Offline
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Re: F18 Networking confusion

Quote:
Originally Posted by nsnbm View Post
Normally the user needs to use either NetworkManager or network, but not both because one can overwrite the other's files. If it's network that you wish to use, then editing the config files will config the system. You can use the GUI program: system-config-network to set up network and it will go some way to editing those files which may be enough to get the network going. If not, then tweaking the config files usually gets the user up, and there's plenty of info on those files. On the other hand, NetworkManager has it's own GUI that you can use, and also has command line programs, but often the GUI gets things going. I don't use NetworkManager, but from my experience with others who do, they say it deals with wifi better.
So if I had a system that was configured with networkmanager, and then I went and disabled that service, how would I go about saving the system from the changes that networkmanager made?

I ran a quick test on a system that was configured using networkmanager, and once disabled, none of my interfaces will come up, despite there being configuration files for both under /etc/sysconfig/network-scripts.

I'm assuming there's a startup script somewhere that specifies which location to use, but I'm not familiar with it, or where it might be stored.
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