Doh... Adding `universe` to xenial-updates in /etc/apt/sources.list helps:
... deb http://archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe So, the "bug"/questions might be: - Was somehow my setup broken leading to an absent `xenial-updates universe` in /etc/apt/sources.list? If my setup was not broken: - Why is zfs-initramfs in xenial-updates universe, but the other zfs packages not? - Should zfs-initramfs be in xenial-updates `universe` or in `main` like the other zfs-packages? - Should /etc/apt/sources.list include xenial-updates universe ? Just a hint for other readers of this bug, in case they do not want to enable `xenial-updates universe`: Without `universe` in xenial-updates I can make make everything work, by downgrading to the version in `main`: apt-get install zfs-doc=0.6.5.6-0ubuntu8 apt-get install libnvpair1linux=0.6.5.6-0ubuntu8 libuutil1linux=0.6.5.6-0ubuntu8 libzfs2linux=0.6.5.6-0ubuntu8 libzpool2linux=0.6.5.6-0ubuntu8 apt-get install zfsutils-linux=0.6.5.6-0ubuntu8 apt-get install zfs-initramfs==0.6.5.6-0ubuntu8 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1694408 Title: zfs-initramfs : Depends: zfs-doc (= 0.6.5.6-0ubuntu8) but 0.6.5.6-0ubuntu16 is to be installed Status in zfs-linux package in Ubuntu: Incomplete Bug description: apt-get install zfsutils-linux zfs-initramfs fails with: zfs-initramfs : Depends: zfs-doc (= 0.6.5.6-0ubuntu8) but 0.6.5.6-0ubuntu16 is to be installed DISTRIB_ID=Ubuntu DISTRIB_RELEASE=16.04 DISTRIB_CODENAME=xenial DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS" 4.4.0-70-generic #91-Ubuntu SMP apt policy zfsutils-linux zfsutils-linux: Installed: 0.6.5.6-0ubuntu16 Candidate: 0.6.5.6-0ubuntu16 Version table: *** 0.6.5.6-0ubuntu16 500 500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 100 /var/lib/dpkg/status 0.6.5.6-0ubuntu8 500 500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1694408/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp