I'm having the same issue with the package check-mk- agent_1.5.0b9-1_all.deb from Nagios (Check_MK).
# lsb_release -rd Description: Ubuntu 18.04.1 LTS Release: 18.04 # apt-cache policy dpkg dpkg: Installed: 1.19.0.5ubuntu2.1 Candidate: 1.19.0.5ubuntu2.1 Version table: *** 1.19.0.5ubuntu2.1 500 500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages 100 /var/lib/dpkg/status 1.19.0.5ubuntu2 500 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages # dpkg -i check-mk-agent_1.5.0b9-1_all.deb (Reading database ... 239815 files and directories currently installed.) Preparing to unpack check-mk-agent_1.5.0b9-1_all.deb ... Unpacking check-mk-agent (1.5.0b9-1) ... dpkg-deb: error: archive 'check-mk-agent_1.5.0b9-1_all.deb' contains two control members, giving up dpkg: error processing archive check-mk-agent_1.5.0b9-1_all.deb (--install): dpkg-deb --fsys-tarfile subprocess returned error exit status 2 Reloading xinetd... Errors were encountered while processing: check-mk-agent_1.5.0b9-1_all.deb -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1730627 Title: xz compressed control.tar files not supported To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1730627/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs