Thanks for reporting this bug. mountkernfs should not be a problem, here is its description:
# Short-Description: Mount kernel virtual file systems. # Description: Mount initial set of virtual filesystems the kernel # provides and that are required by everything. I'll mark this as affecting initscripts, which provides mountkernfs, because I don't know what to look for to determine why mountkernfs would not be provided. ** Also affects: sysvinit (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1539548 Title: Ubuntu 16.04: not possible to install qemu-system-common To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1539548/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs