[Bug 1886811] Re: systemd complains Failed to enqueue loopback interface start request: Operation not supported

[Christian Ehrhardt ]

SRU need the bug 1890881 fix to be really helpful, but the dependency chain of 
that is not SRUable.
See: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1890881/comments/17

Users (of this valid but rare use case) can either use Groovy which will
fix this or wait until Openstack Victoria will make it available for
Focal via the Ubuntu Cloud Archive [1].

[1]: https://wiki.ubuntu.com/OpenStack/CloudArchive

** Changed in: qemu (Ubuntu Focal)
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/1886811

Title:
  systemd complains Failed to enqueue loopback interface start request:
  Operation not supported

Status in QEMU:
  Fix Committed
Status in qemu package in Ubuntu:
  Fix Released
Status in qemu source package in Focal:
  Won't Fix
Status in qemu package in Debian:
  Fix Released

Bug description:
  This symptom seems similar to
  https://bugs.launchpad.net/qemu/+bug/1823790

  Host Linux: Debian 11 Bullseye (testing) on x84-64 architecture
  qemu version: latest git of git commit hash 
eb2c66b10efd2b914b56b20ae90655914310c925
  compiled with "./configure --static --disable-system" 

  Down stream bug report at 
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964289
  Bug report (closed) to systemd: 
https://github.com/systemd/systemd/issues/16359

  systemd in armhf and armel (both little endian 32-bit) containers fail to 
start with
  Failed to enqueue loopback interface start request: Operation not supported

  How to reproduce on Debian (and probably Ubuntu):
  mmdebstrap --components="main contrib non-free" --architectures=armhf 
--variant=important bullseye /var/lib/machines/armhf-bullseye
  systemd-nspawn -D /var/lib/machines/armhf-bullseye -b

  When "armhf" architecture is replaced with "mips" (32-bit big endian) or 
"ppc64"
  (64-bit big endian), the container starts up fine.

  The same symptom is also observed with "powerpc" (32-bit big endian)
  architecture.

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