On Fri, 2024-02-02 at 10:41 -0600, David Wright wrote: > On Fri 02 Feb 2024 at 07:37:34 (+0000), Tixy wrote: > > On Wed, 2024-01-31 at 22:12 -0600, David Wright wrote: > > > > I also have a more vague memory that you could put config into > > > > /etc/network/interfaces then in some circumstance > > > > NetworkManager > > > > would > > > > not try and manage that interface, and in others it would take > > > > over. > > > > (Perhaps selected by allow hotplug option in the ifupdown > > > > config?) > > > > > > That seems unlikely. Perhaps you're thinking of NM's ifupdown > > > plugin > > > that allows you to use the configuration in /e/n/i. I'm assuming > > > the > > > OP has not installed that in their sleep. > > > > They wouldn't need to because it looks like it's shipped with the > > main > > network-manage package which contains various files with 'plugin' > > in > > their name, including libnm-settings-plugin-ifupdown.so. > > What I said was unlikely is that an option in ifupdown's > configuration, > /e/n/i, would control NM's behaviour. It's the mere mention of the > interface there, as in iface enp5s0 inet dhcp that makes ifupdown > control it, and makes NM back off, AIUI. > > > As we've seen from the OPs latest reply, the plugin is configured > > to > > not manage interfaces. > > Right, and so the default NM configuration (ifupdown plugin present, > news to me) and [ifupdown] // managed=false in the .conf file, > means that NM should not, by default, configure any interface > mentioned in /e/n/i. In the OP's case, the original /e/n/i: > -rw-r--r-- 1 root root 433 Oct 4 17:23 interfaces.orig > is big enough to hold a typical lo+eth+wlan configuration, which > we haven't seen yet.
Sorry for late, David! Still i am on Debian Sid. And all Gnome network works very well. And here is the detail contents of /e/n/i file: <quote> root@thinkpad-e495:/etc/network# ls -l total 24 drwxr-xr-x 2 root root 4096 Jan 7 18:51 if-down.d drwxr-xr-x 2 root root 4096 Jan 8 19:45 if-post-down.d drwxr-xr-x 2 root root 4096 Jan 8 19:45 if-pre-up.d drwxr-xr-x 2 root root 4096 Jan 7 18:51 if-up.d drwxr-xr-x 2 root root 4096 Jan 24 2023 interfaces.d -rw-r--r-- 1 root root 433 Oct 4 17:23 interfaces.orig root@thinkpad-e495:/etc/network# cat interfaces.orig # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). source /etc/network/interfaces.d/* # The loopback network interface auto lo iface lo inet loopback # The primary network interface allow-hotplug wlp4s0 iface wlp4s0 inet dhcp # wireless-* options are implemented by the wireless-tools package wireless-mode managed wireless-essid V30_3982 root@thinkpad-e495:/etc/network# date Sun Feb 4 13:48:14 KST 2024 root@thinkpad-e495:/etc/network# </quote> NOTE: 1. I have never touched the inside of that file. 2. I guess the real original file was from Debian 12. Thanks!!! Sincerely, Byunghee -- ^고맙습니다 _布德天下_ 감사합니다_^))//