Thank you, I met the same problem like you. I downloaded official openwrt 22.03.2 x86 tarball as image and run it with LXD on an Ubuntu22.04 host. After try you solution, it works. 
Thank you, I met the same problem like you. I downloaded official openwrt 22.03.2 x86 tarball as image and run it with LXD on an Ubuntu22.04 host. After try you solution, it works.