Description of problem: nm-connection-editor keeps resetting IPV6_ADDR_GEN_MODE to stable-privacy, even after it is hand-edited in ifcfg-* files to be eui64. This setting needs to stay persistent and not be changed, and/or there should be a GUI setting to control this. Version-Release number of selected component (if applicable): NetworkManager-1.8.2-1.fc26.x86_64 kernel-4.13.5-200.fc26.x86_64 How reproducible: always Steps to Reproduce: 1. edit ifcfg-* to say IPV6_ADDR_GEN_MODE=eui64 2. run nm-connection-editor, make some change, save 3. look at ifcfg-* file, it now says IPV6_ADDR_GEN_MODE=stable-privacy Actual results: After nm-connection-editor editing: DEVICE=br0 ONBOOT=yes TYPE=Bridge BOOTPROTO=dhcp STP=no BRIDGING_OPTS=multicast_snooping=0 PROXY_METHOD=none BROWSER_ONLY=no DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no IPV6_PRIVACY=no IPV6_ADDR_GEN_MODE=stable-privacy NAME=br0 UUID=d2d68553-f97e-7549-7a26-b34a26f29318 ZONE=FedoraWorkstation Expected results: After manual file edit: DEVICE=br0 ONBOOT=yes TYPE=Bridge BOOTPROTO=dhcp STP=no BRIDGING_OPTS=multicast_snooping=0 PROXY_METHOD=none BROWSER_ONLY=no DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no IPV6_PRIVACY=no IPV6_ADDR_GEN_MODE=eui64 NAME=br0 UUID=d2d68553-f97e-7549-7a26-b34a26f29318 ZONE=FedoraWorkstation
did you reload the connection profile after editing the ifcfg-file? either via - nmcli connection load /etc/sysconfig/network-scripts/ifcfg-br0 - nmcli connection reload - systemctl restart NetworkManager - reboot (the last two are the big hammer. Usually, you wouldn't restart NM in order to reload a connection).
As mentioned, after manual ifcfg-* file update, you need to reload the connection $ nmcli connection load /etc/sysconfig/network-scripts/ifcfg-br0 NetworkManager doesn't monitor the files (by default). This can be changed with monitor-connection-files setting in the configuration file (though it is discouraged). See man NetworkManager.conf The property can also be changed via nmcli this way: $ nmcli con modify br0 ipv6.addr-gen-mode eui64
Created attachment 1346736 [details] [PATCH] editor: allow setting IPv6 address generation mode (rh #1501664) I agree that nm-connection-editor should allow editing addr-gen-mode property. This patch implements that. (It is published in upstream branch jk/rh1501664-edit-addr-gen-mode too.)
Note that the original bug report is probably not correct. At least, I cannot reproduce the issue. nm-connection-editor may not support addr-gen-mode (yet), but saving a connection in nm-connection-editor leaves the addr-gen-mode unchanged. The reporter may not have reloaded the connection, which is a user-error. Anyway, it's useful to expose this feature. (In reply to Blueowl from comment #3) > Created attachment 1346736 [details] > [PATCH] editor: allow setting IPv6 address generation mode (rh #1501664) Pushed minor fixup commits to jk/rh1501664-edit-addr-gen-mode Rest lgtm.
Patch and fixup commits LGTM.
(In reply to Beniamino Galvani from comment #5) > Patch and fixup commits LGTM. merged to master: https://git.gnome.org/browse/network-manager-applet/commit/?id=6a0a3dd51202116e1e72f7874f1472a906b2bcb5 (including the fixup commits) Thanks Jirka!
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