adduser/bionic,now 3.116ubuntu1 all [installed]

adduser/bionic,bionic,now 3.116ubuntu1 all [installed]

$ apt list zenity zenity-common zziplib-bin
Listing... Done
zenity/xenial,now 3.18.1.1-1ubuntu2 amd64 [installed,automatic]
zenity-common/xenial,xenial,now 3.18.1.1-1ubuntu2 all [installed,automatic]
zziplib-bin/xenial-updates,xenial-security 0.13.62-3ubuntu0.16.04.2 amd64

$ apt policy zenity zenity-common zziplib-bin
zenity:
  Installed: 3.18.1.1-1ubuntu2
  Candidate: 3.18.1.1-1ubuntu2
  Version table:
 *** 3.18.1.1-1ubuntu2 500
        500 http://ftp.uni-stuttgart.de/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status
zenity-common:
  Installed: 3.18.1.1-1ubuntu2
  Candidate: 3.18.1.1-1ubuntu2
  Version table:
 *** 3.18.1.1-1ubuntu2 500
        500 http://ftp.uni-stuttgart.de/ubuntu xenial/main amd64 Packages
        500 http://ftp.uni-stuttgart.de/ubuntu xenial/main i386 Packages
        100 /var/lib/dpkg/status
zziplib-bin:
  Installed: (none)
  Candidate: 0.13.62-3ubuntu0.16.04.2
  Version table:
     0.13.62-3ubuntu0.16.04.2 500
        500 http://ftp.uni-stuttgart.de/ubuntu xenial-updates/universe amd64 Packages
        500 http://ftp.uni-stuttgart.de/ubuntu xenial-security/universe amd64 Packages
     0.13.62-3 500
        500 http://ftp.uni-stuttgart.de/ubuntu xenial/universe amd64 Packages