@mpontillo Bionic has always suffered from this bug. The patch set has only been backport to Cosmic and the fixes have not yet been backported to Bionic.
Have you, by chance, recently reconfigured your container to be an unprivileged container when it was previously a privileged container? (I don't know if this is actually possible to do in LXD but it would cause this bug to start affecting your container) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1784501 Title: libvirtd is unable to configure bridge devices inside of LXD containers Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Triaged Bug description: libvirtd cannot properly configure the default bridge device when installed inside of unprivileged LXD containers. 'systemctl status libvirtd' shows the following error: error : virNetDevBridgeSet:140 : Unable to set bridge virbr0 forward_delay: Permission denied This is caused due to the files under /sys/class/net/ being owned by init namespace root rather than container root even when the bridge device is created inside of the container. Here's an example from inside of an unprivileged container: # brctl addbr testbr0 # ls -al /sys/class/net/testbr0/bridge/forward_delay -rw-r--r-- 1 nobody nogroup 4096 Jul 30 22:33 /sys/class/net/testbr0/bridge/forward_delay libvirt cannot open this file for writing even though it created the device. Where safe, files under /sys/class/net/ should be owned by container root. The following upstream patches have been merged into linux-next which fix this bug: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=c59e18b876da3e466abe5fa066aa69050f5be17c https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=d1753390274f7760e5b593cb657ea34f0617e559 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784501/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
