The network installation with the mirror inside ubuntu-16.04-server-amd64.iso leaves several invalid sources.list entries(updates,security) in the installed system

[bugproxy]

---Problem Description---
I tried to provision the x86_64 kvm guest with the mirror inside ubuntu-16.04-server-amd64.iso, the preseed lines to specify the mirror is:

### Mirror settings
# If you select ftp, the mirror/country string does not need to be set.

d-i mirror/country string manual

d-i mirror/protocol string http

d-i mirror/http/directory string /install/ubuntu16.04/x86_64

d-i mirror/http/proxy string

# Suite to install.
#d-i mirror/suite string testing
# Suite to use for loading installer components (optional).
#d-i mirror/udeb/suite string testing

In the installed system, there are several invalid lines in the /etc/apt/sources.list

root@bybc0605:~# cat /etc/apt/sources.list|grep -v "^#"
deb http://xcatmn/install/ubuntu16.04/x86_64 xenial main restricted
deb http://xcatmn/install/ubuntu16.04/x86_64 xenial-updates main restricted
deb http://security.ubuntu.com/ubuntu xenial-security main restricted

Since the mirror inside ubuntu-16.04-server-amd64.iso does not include "xenial-updates" and " xenial-security ", the 2 entries are invalid and apt-get update will complain error messages. Is there any preseed configuration to prevent writing the "xenial-updates" and " xenial-security " lines in /etc/apt/sources.list in the installed system?

---uname output---
Linux bybc0605 4.4.0-28-generic #47-Ubuntu SMP Fri Jun 24 10:09:13 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Machine Type = x86_64 kvm guest

---boot type---
Network boot

---bootloader---
grub

---Kernel cmdline used to launch install---

---Bootloader protocol---
http

---Install repository type---
CDROM

---Point of failure---
Problem during post-install (stage 2) configuration or other problem seen after reboot

The whole preseed file:
### Localization
d-i debian-installer/locale string en_US
d-i localechooser/supported-locales multiselect en_US.UTF-8

# Keyboard Selection
d-i console-setup/ask_detect boolean false
d-i keyboard-configuration/layoutcode string en

# Use the following settings if you wish to make use of the network-console
# component for remote installation over SSH. This only makes sense if you
# intend to perform the remainder of the installation manually.
#UNCOMMENTOENABLESSH# d-i anna/choose_modules string network-console
#d-i network-console/authorized_keys_url string http://10.0.0.1/openssh-key
#UNCOMMENTOENABLESSH# d-i network-console/password password cluster
#UNCOMMENTOENABLESSH# d-i network-console/password-again password cluster

### Network Configuration

d-i netcfg/get_hostname string unassigned-hostname
d-i netcfg/get_domain string unassigned-domain
d-i netcfg/wireless_wep string
d-i netcfg/dhcp_timeout string 120
### Mirror settings
# If you select ftp, the mirror/country string does not need to be set.

d-i mirror/country string manual

d-i mirror/protocol string http

d-i mirror/http/directory string /install/ubuntu16.04/x86_64

d-i mirror/http/proxy string

# Suite to install.
#d-i mirror/suite string testing
# Suite to use for loading installer components (optional).
#d-i mirror/udeb/suite string testing

# Use the following option to add additional boot parameters for the
# installed system (if supported by the bootloader installer).
# Note: options passed to the installer will be added automatically.
d-i debian-installer/add-kernel-opts string console=tty0 console=ttyS0

### Partitioning
# This creates a small /boot partition, suitable
# swap, and uses the rest of the space for the root partition:

d-i partman-auto/method string regular
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-md/device_remove_md boolean true

#create the /tmp/partitionfile based on the uefi or legacy bios
d-i partman/early_command string \
{ \
    wget http://`cat /tmp/xcatserver`/install/autoinst/getinstdisk; chmod u+x getinstdisk; ./getinstdisk; \
    debconf-set partman-auto/disk ""; \
} >>/tmp/pre-install.log 2>&1
d-i partman-auto/expert_recipe_file string /tmp/partitionfile

# This makes partman automatically partition without confirmation, provided
# that you told it what to do using one of the methods above.

d-i partman/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true

#XCA_PARTMAN_ADDITIONAL_CFG#

### Account setup

d-i passwd/root-login boolean true
d-i passwd/make-user boolean false

d-i passwd/root-password-crypted password $1$X96IRi06$i/Q4b76jcT7SjIvHhZDw9/

### Clock and time zone setup

d-i clock-setup/ntp boolean true
d-i clock-setup/ntp-server string 10.5.107.196
d-i clock-setup/utc boolean true
d-i time/zone string Etc/UTC

### Apt setup

d-i apt-setup/multiverse boolean false
d-i apt-setup/universe boolean false
d-i apt-setup/backports boolean false
d-i apt-setup/updates boolean false

### Boot loader installation

d-i grub-installer/only_debian boolean true

### Package selection

tasksel tasksel/first multiselect standard

# gawk required for the xCAT scripts to work
# Otherwise it installs mawk, which doesn't work

d-i pkgsel/include string openssh-server ntp ntpdate gawk nfs-common snmpd

d-i debian-installer/allow_unauthenticated boolean true
d-i pkgsel/update-policy select none
d-i pkgsel/updatedb boolean false

### Finishing up the installation
d-i finish-install/reboot_in_progress note

### X configuration
xserver-xorg xserver-xorg/autodetect_monitor boolean true

xserver-xorg xserver-xorg/config/monitor/selection-method \
  select medium

xserver-xorg xserver-xorg/config/monitor/mode-list \
  select 1024x768 @ 60 Hz

# To workaround the "Unmount partitions that are in use?" question,
# run the "umount /media" after the preseed is read in
d-i preseed/early_command string \
     { \
     echo "Running preseeding early_command Installation script..."; \
     wget http://`cat /tmp/xcatserver`/install/autoinst/bybc0605.pre; \
     chmod u+x bybc0605.pre; \
     ./bybc0605.pre; \
     umount /media || true; \
     } >>/tmp/pre-install.log 2>&1

d-i preseed/late_command string \
     mkdir -p /target/var/log/xcat/; \
     { \
     cat /tmp/pre-install.log >> /target/var/log/xcat/xcat.log; \
     echo "Running preseeding late_command Installation script..."; \
     wget http://`cat /tmp/xcatserver`/install/autoinst/bybc0605.post; \
     chmod u+x bybc0605.post; \
     cp ./bybc0605.post /target/root/post.script; \
     mount -o bind /proc /target/proc -t proc; \
     mount -o bind /dev /target/dev; \
     mount -o bind /dev/pts /target/dev/pts -t devpts; \
     mount -o bind /sys /target/sys; \
     chroot /target /root/post.script; \
     cp /target/etc/network/interfaces /etc/network/interfaces; \
     } >>/target/var/log/xcat/xcat.log 2>&1

[Luciano Chavez (lnx1138)]

Looking for help from debian-installer team on this one.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-09-12 10:10 EDT-------
Hello Canonical,
Do you have any status updates for this bug?
Thanks, Gary

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.