Description of problem: When I disable the IPv6 using the NetworkManager UI, the IPv6 is still configured and it's working. Version-Release number of selected component (if applicable): NetworkManager-1.4.2-1.fc25.x86_64 gnome-shell-3.22.2-2.fc25.x86_64 $ cat /etc/os-release NAME=Fedora VERSION="25 (Workstation Edition)" <...> How reproducible: Every time. Steps to Reproduce: 1. Open the edit connection for the specific WiFi network /UI/ 2. Go to IPv6 3. Set the IPv6 to OFF /The global switch/ 4. Stop the WiFi and start it again Actual results: The WiFi device will have a valid IPv6 address and the IPv6 will work normally. Expected results: The WiFi device should have only IPv4 since the IPv6 is set to disabled. Additional info: When the IPv6 is enabled the configuration is as follows: HWADDR=<...> ESSID="<...>" MODE=Managed KEY_MGMT=WPA-PSK TYPE=Wireless DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no IPV6_ADDR_GEN_MODE=stable-privacy NAME=<...> UUID=<...> ONBOOT=yes MAC_ADDRESS_RANDOMIZATION=default BOOTPROTO=dhcp PEERDNS=yes PEERROUTES=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes When the IPv6 is disabled the configuration is as follows: HWADDR=<...> ESSID="<...>" MODE=Managed KEY_MGMT=WPA-PSK TYPE=Wireless DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=no IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no IPV6_ADDR_GEN_MODE=stable-privacy NAME=<...> UUID=<...> ONBOOT=yes BOOTPROTO=dhcp IPV6_PEERDNS=yes IPV6_PEERROUTES=yes MAC_ADDRESS_RANDOMIZATION=default PEERDNS=yes PEERROUTES=yes
NetworkManager doesn't support a ipv6.method=disabled. It only supports ipv6.method=ignored, which means: to use the sysctl values that were configured for the interface outside of NetworkManager. That quite possibly means: "accept_ra 1", so kernel will configure IPv6 on that interface. It's a missing feature, not fixed upstream yet (https://bugzilla.gnome.org/show_bug.cgi?id=746041)
This message is a reminder that Fedora 25 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 25. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '25'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 25 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
This is still valid bug for Fedora 27
This message is a reminder that Fedora 27 is nearing its end of life. On 2018-Nov-30 Fedora will stop maintaining and issuing updates for Fedora 27. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '27'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 27 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
Fedora 27 changed to end-of-life (EOL) status on 2018-11-30. Fedora 27 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.