NetworkManager overriding static IP...

The_Great_Sephiroth

I have a strange issue in Gentoo that does not exist in Debian. If I set a static address on an interface in Gentoo, NM takes over once a user logs into the system and gets a new address from DHCP. How can I prevent this? We use NM for VPN so we do need it, but we do not want it overriding the system defaults.
_________________
Ever picture systemd as what runs "The Borg"?

charles17 · Advocate Joined: 02 Mar 2008 Posts: 3664

The_Great_Sephiroth · Posted: Mon Apr 04, 2016 1:14 pm Post subject:

I set it in /etc/conf.d/net per the Gentoo guide. I then symlink /etc/init.d/net.lo to /etc/init.d/net.enp0s25. Upon boot, I have the correct address. Once I log into K, NM takes over and over-writes it.
_________________
Ever picture systemd as what runs "The Borg"?

charles17 · Advocate Joined: 02 Mar 2008 Posts: 3664

For usage of NM in parallel with another network managers see the leading note in https://wiki.gentoo.org/wiki/Networkmanager. Guess that might also refer to netifrc.
Have you tried using ip route?

The_Great_Sephiroth · Posted: Mon Apr 25, 2016 1:46 pm Post subject:

Back again with this problem. I disabled everything else and made a system connection in NM, but I do not know how to tell NM to use the connection on boot. It seems dead set on using DHCP. There are no networking items in my runlevels EXCEPT NM. How do I tell NM to use said connection when it starts instead of using DHCP? This is driving me crazy! I cannot believe how hard it is to do such a trivial task here! We use NM for VPN connections so we NEED it, but it has zero support for anything but DHCP on boot? That is insane!

Also, if you can recommend something as simple to use as NM for the brainless ones that work here and do not understand the CLI, I may be open to change, but I cannot fathom how such a feature-rich app falls on its face when it comes to a static address on boot.
_________________
Ever picture systemd as what runs "The Borg"?

Fitzcarraldo · Posted: Tue Apr 26, 2016 7:45 am Post subject:

In the NetworkManager GUI front-end (plasma-nm or nm-applet, or whatever you are using), did you tick 'Automatically connect to this network when it is available' for the connection with a static IP address and also make sure no other connection has that option ticked? You can edit NetworkManager's system connections configuration file directly (it is in the directory /etc/NetworkManager/system-connections/) rather than doing it via the GUI, and change 'autoconnect=false' to 'autoconnect=true' (or add 'autoconnect=true' if the autoconnect option is not listed already in the file). Here is an example (addresses anonymised):

The_Great_Sephiroth · Posted: Tue Apr 26, 2016 4:13 pm Post subject:

I did, but when I edited the connections I do not remember seeing the "autoconnect" line. That is PROBABLY the issue. I will report back.
_________________
Ever picture systemd as what runs "The Borg"?

Fitzcarraldo · Posted: Wed Apr 27, 2016 4:58 am Post subject:

While you're at it, as NetworkManager manages everything it would be worth you double checking a few other things to make sure your installation is configured correctly to use NetworkManager.

You should not have any netifrc and DHCP services configured to run independently of NetworkManager (NetworkManager takes care of everything itself, launching the DHCP client you chose* as and when it needs to):

The_Great_Sephiroth · Posted: Wed Apr 27, 2016 5:04 pm Post subject:

Thank you, but the autoconnect entry seems to be the missing variable here.