apt-cache policy libvirt-bin
libvirt-bin:
  Installed: 1.3.1-1ubuntu6
  Candidate: 1.3.1-1ubuntu6
  Version table:
 *** 1.3.1-1ubuntu6 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status