Comment 2 for bug 192594

I reproduced it (likewise-open goes to "unplugged-mode and never comes back) but a reboot fixes it (or a restart of likewise-open, as cfrein suggested). You might be hitting bug 205111 on the reboot (likewise-open removes init script links on domain join, resulting in likewise not restarting automatically at reboot).

I reproduced the problem on the latest sources, I'll check if it is known upstream.