Fresh install of Ubuntu 22.04, LXD via snap, containers cannot reach the internet

[tomp (Thomas Parrott)]

Oh you are trying to launch an old container on a new host, see

Error: The image used by this instance requires a CGroupV1 host system when using clustering

This isn’t specific a standalone or clustered LXD setups, it is to do with the cgroup setup of the LXD host compared to what the image you’re trying to use requires. Running older container OSes on more modern host systems that use CGroupV2 can produce this conflict. To resolve it you need to boot your host system into CGroupV1 mode by modifying your kernel’s boot arguments to include: systemd.unified_cgroup_hierarchy=false Then: sudo update-grub