[Bug 2062176] [NEW] Cannot launch armhf containers on arm64 host under noble

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Under the current noble daily server image for Raspberry Pi (arm64
architecture) I cannot launch an armhf container image using lxd from
the channel 5.21/stable/ubuntu-24.04 (build 28284). It *appears* to
launch successfully, and lxd reports no error yet afterward the
container is stopped:

$ lxc launch ubuntu-daily:n/armhf nobletest
Creating nobletest
Starting nobletest
$ lxc list
+-----------+---------+------+------+-----------+-----------+
|    NAME   |  STATE  | IPV4 | IPV6 |   TYPE    | SNAPSHOTS |
+-----------+---------+------+------+-----------+-----------+
| nobletest | STOPPED |      |      | CONTAINER | 0         |
+-----------+---------+------+------+-----------+-----------+

In case this was an issue with the current noble daily, I also attempted
launching the mantic and jammy armhf images, but with the same symptoms:

$ lxc launch ubuntu:m/armhf mantictest
Creating mantictest
Starting mantictest
$ lxc list
+------------+---------+------+------+-----------+-----------+
|    NAME    |  STATE  | IPV4 | IPV6 |   TYPE    | SNAPSHOTS |
+------------+---------+------+------+-----------+-----------+
| nobletest  | STOPPED |      |      | CONTAINER | 0         |
+------------+---------+------+------+-----------+-----------+
| mantictest | STOPPED |      |      | CONTAINER | 0         |
+------------+---------+------+------+-----------+-----------+

I attempted the same tests under the 23.10 server for Pi images (also
arm64 host) and both containers launched successfully, so this appears
to be an issue with lxd under noble specifically.

** Affects: lxd
     Importance: Unknown
         Status: Fix Released

** Affects: linux-raspi (Ubuntu)
     Importance: Undecided
         Status: Confirmed

** Affects: glibc (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: kern-10956
-- 
Cannot launch armhf containers on arm64 host under noble
https://bugs.launchpad.net/bugs/2062176
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