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[Launchpad Bug Tracker <1621507@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package open-iscsi -
2.0.873+git0.3b4b4500-14ubuntu14

---------------
open-iscsi (2.0.873+git0.3b4b4500-14ubuntu14) zesty; urgency=medium

  * Make systemd job not run in containers (LP: #1576341)

 -- Serge Hallyn <serge.hallyn@xxxxxxxxxx>  Sun, 15 Jan 2017 23:08:29
-0600

** Changed in: open-iscsi (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1621507

Title:
  initramfs-tools configure_networking() fails to dhcp ipv6 addresses

Status in MAAS:
  Fix Committed
Status in initramfs-tools package in Ubuntu:
  Fix Released
Status in isc-dhcp package in Ubuntu:
  Fix Released
Status in klibc package in Ubuntu:
  Won't Fix
Status in open-iscsi package in Ubuntu:
  Fix Released
Status in initramfs-tools source package in Xenial:
  Fix Released
Status in isc-dhcp source package in Xenial:
  Fix Released
Status in klibc source package in Xenial:
  Won't Fix
Status in open-iscsi source package in Xenial:
  Fix Released
Status in initramfs-tools source package in Yakkety:
  Fix Released
Status in isc-dhcp source package in Yakkety:
  Fix Released
Status in klibc source package in Yakkety:
  Won't Fix
Status in open-iscsi source package in Yakkety:
  Fix Released
Status in klibc package in Debian:
  New

Bug description:
  initramfs' configure_networking function uses ipconfig to configure the network.
  ipconfig does not support dhcpv6.  See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627164

  Related bugs:
    * bug 1229458: grub2 needed changes
    * bug 1621615: network not configured when ipv6 netbooted into cloud-init
    * bug 1635716: Can't bring up a machine on a dual network (ipv4 and ipv6)

  Bugs related to uploads for this specific SRU:

  cloud-init:
  bug 1460715: different fix unrelated to this SRU
  bug 1639930: ip6= on kernel command line
  bug 1642679: different fix unrelated to this SRU
  bug 1644043: different fix unrelated to this SRU

  ifupdown:
  bug 1629972: networking.service takes down lo on stop

  initramfs-tools:
  bug 1621507: no IPv6 DHCP support in early boot
  bug 1628306: regression-update (failure when ip="")
  bug 1631474: regression-update (failure when ip=:::::eth0:dhcp)

  isc-dhcp:
  bug 1621507: no IPv6 DHCP support in early boot
  bug 1633479: dhclient does not wait for IPv6 DAD

  open-iscsi:
  bug 1621507: no IPv6 DHCP support in early boot

  [Impact]

  It is not possible to netboot Ubuntu with a network-based root
  filesystem in an ipv6-only environment.  Anyone wanting to netboot in
  an ipv6-only environment is affected.

  [Stable Fix]

  These uploads add "ip6=" to the command line syntax to configure ipv6
  using the defacto isc-dhcp-client.  IPv4 configuration (and "ip="
  syntax) remain unchanged.

  Valid format for the ip6= command line option is:
     ip6=none (or ip6=off or ip6=) -- do not configure ipv6
     ip6=DEVICE  -- run IPv6 dhclient on device DEVICE.

  [Test Case]

  See Bug 1229458.  Configure radvd, dhcpd, and tftpd for your ipv6-only
  netbooting world.  Pass the boot process an ipv6 address to talk to,
  and see it fail to configure the network.

  [Regression Potential]

  1) This increases the uncompressed initramfs size by approximately 500KB, since isc-dhcp-client is added, but klibc is still needed for some other things, and is therefore present.  On systems with a very small /boot partition, this could result in failure to upgrade the initramfs.
  2) In at least some cases, DHCP network configuration shifts from klibc's ipconfig to isc-dhcp-client's dhclient.  This should be of minimal risk, as isc-dhcp-client is in very very widespread use.  In the event of a regression, network boot would fail, but the prior kernel should still be bootable.

  [Tests for verification]

  Whoever checks the last one off, please mark verification done.

  MAAS test cases:
   X / Y
  [+]/[+] MAAS on IPv6-only network
  [+]/[+] MAAS on IPv4-only network
  [+]/[+] MAAS booting IPv4 on dual-stack network (with and without dhcp6)
  [+]/[+] MAAS booting IPv6 on dual-stack network (with and without dhcp4)

  Non-MAAS test cases:
   X / Y
  [+]/[+] ip="" and ip6 not present
  [+]/[+] ip=:::::eth0:dhcp and ip6 not present
  [+]/[+] d-i install with iSCSI remote root should complete normally
  [+]/[+] Validate normal boot without remote root
  [+]/[+] Booting an iSCSI remote root via IPv4 (using ip=)
  [+]/[+] Booting an iSCSI remote root via IPv6 (using ip6=)
  [+]/[+] Booting an iSCSI remote root via IPv4 (no ip=, d-i use case)
  [+]/[+] Booting an iSCSI remote root with BOOTIF specified (BOOTIF=mac of booting device)52-54-00-53-5d-24
  [+]/[+] Booting an iSCSI remote root on mixed network with no options (IPv4 should be used only)

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