[Bug 1683908] [NEW] Z system has no network after do-release-upgrade from Yakkety to Zesty

[John George]

Public bug reported:

do-release-upgrade was performed on a zKVM guest instance, upgrading
Yakkety to Zesty. After reboot the system was no longer available on the
network. The interface name changed from eth0 to enc1. The following
change was required:

ubuntu at s5lp6-gen01:~$ diff interfaces.ori /etc/network/interfaces
11,12c11,12
< auto eth0
< iface eth0 inet static
---
> auto enc1
> iface enc1 inet static

** Affects: netcfg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: s390x

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https://bugs.launchpad.net/bugs/1683908

Title:
  Z system has no network after do-release-upgrade from Yakkety to Zesty

Status in netcfg package in Ubuntu:
  New

Bug description:
  do-release-upgrade was performed on a zKVM guest instance, upgrading
  Yakkety to Zesty. After reboot the system was no longer available on
  the network. The interface name changed from eth0 to enc1. The
  following change was required:

  ubuntu at s5lp6-gen01:~$ diff interfaces.ori /etc/network/interfaces
  11,12c11,12
  < auto eth0
  < iface eth0 inet static
  ---
  > auto enc1
  > iface enc1 inet static

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