[libvirt-users] oddity with lxc-enter-namespace

Hi folks I have a question about lxc-enter-namespace I am migrating lxc containers from a host running libvirt-1.2.5 on f20 to another one running libvirt-1.2.9 on f21 and now I can't seem to use lxc-enter-namespace for entering in a container any more I would do virsh -c lxc:/// lxc-enter-namespace --noseclabel container /bin/bash but when I try the same now I am getting this: # virsh -c lxc:/// lxc-enter-namespace --noseclabel nagios /bin/bash setlocale: No such file or directory libvirt: error : Expected at least one file descriptor error: internal error: Child process (137198) unexpected exit status 125 I tried to google that but nothing too relevant showed up.. are there known regressions to lxc-enter-namespace, or what else do I seem to do wrong here? thanks