According to the logs this was an issue with xinetd upgrade while vsftpd installed.
There merges/upgrades to all of those. So I wanted to verify that the upgrade paths currently supported work. So I was trying for 14.04 -> 16.04 and 15.10 -> 16.04 1. configure xinetd+vsftpd 2. check working 3. upgrade to 16.04 4. check working Note: nice howto for vsftpd+xinetd here https://linuxconfig.org/how-to- setup-and-use-ftp-server-in-ubuntu-linux?utm_source=feedly Both upgrades worked smoothly, the service worked like a charm after the upgrade directly after reboot. That said I'll set this bug to invalid. Feel free to reopen in case there is a new way to still reproduce this issue. ** Changed in: xinetd (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1509661 Title: package xinetd 1:2.3.15-4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xinetd/+bug/1509661/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
