# apt-cache policy libc6-dev libc6-dev:i386
libc6-dev:
  Installed: 2.28-0ubuntu1
  Candidate: 2.28-0ubuntu1
  Version table:
 *** 2.28-0ubuntu1 500
        500 http://fr.archive.ubuntu.com/ubuntu cosmic/main amd64 Packages
        100 /var/lib/dpkg/status
libc6-dev:i386:
  Installed: 2.28-0ubuntu1
  Candidate: 2.28-0ubuntu1
  Version table:
 *** 2.28-0ubuntu1 500
        500 http://fr.archive.ubuntu.com/ubuntu cosmic/main i386 Packages
        100 /var/lib/dpkg/status