Yes, the apport report is good one, has loads of useful stuff. 1) I cannot find any evidance that ubuntu installer created the broken/unneeded file /etc/network/interfaces.d/encf5f0. To recover i recommend you to remove that file. Also note, if system is migrated and network configuration is changing post-install, system administrator is expected to update it accordingly.
2) Can you trace and find who and/or where is modifying files in /etc/network/interfaces.d ? Is there any automation, puppet/chef, administrators, humans creating it? I've checked multiple installs that we have have and none of them generate anything in interfaces.d subdirectory upon install. 3) Is this reporducible? If yes, how? Can you share the full paramfile used to boot the system? From the collected logs the boot kernel command line looks very weird: Mar 18 07:15:47 kernel: [ 0.049063] Kernel command line: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ literary. Has it been tampered with or censored? ** Changed in: debian-installer (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1556241 Title: installer sets "iface encf5f0 inet dhcp" although a static IP address was preseeded To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1556241/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs