We're in the process of moving the devel project for lxc from Virtualization to
Virtualization:containers
(https://build.opensuse.org/package/show/Virtualization:containers/lxc). We're
aiming at full support for unprivileged containers. Since unprivileged users
are not allowed to attach veth devices to network bridges, lxc uses
lxc-user-nic for a long time to do this. This is the only purpose of this
binary and it is the only suid binary shipping with lxc. We're currently
removing the suid bit during install but I'd really like to have this on by
default. We're planning on packaging lxd and it will need lxc-user-nic as well.