DevStack（OpenStack）环境下Ubuntu 22.04 LTS虚拟机systemd-resolved.service启动失败求助

各位大佬好，我遇到了一个棘手的问题，想请大家帮忙排查下：

最近我在服务器上部署了DevStack（OpenStack发行版），并且上传了Ubuntu官方的Ubuntu Server 20.04 LTS和22.04 LTS云镜像。现在的情况是，20.04版本的虚拟机一切正常，systemd-resolved.service运行良好，能正常ping通外网；但22.04版本的虚拟机里，这个服务始终启动失败，执行sudo systemctl status systemd-resolved.service得到的报错信息如下：

ubuntu@test:~$ sudo systemctl status systemd-resolved.service

× systemd-resolved.service - Network Name Resolution

Loaded: loaded (/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: enabled)

Active: failed (Result: exit-code) since Wed 2023-04-05 14:53:46 UTC; 47s ago

Docs: man:systemd-resolved.service(8)

man:org.freedesktop.resolve1(5)

https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers

https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients

Process: 569 ExecStart=/lib/systemd/systemd-resolved (code=exited, status=1/FAILURE)

Main PID: 569 (code=exited, status=1/FAILURE)

Error: 99 (Cannot assign requested address)

CPU: 79ms

Apr 05 14:53:46 test systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=1/FAILURE

Apr 05 14:53:46 test systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.

Apr 05 14:53:46 test systemd[1]: Failed to start Network Name Resolution.

Apr 05 14:53:46 test systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 5.

Apr 05 14:53:46 test systemd[1]: Stopped Network Name Resolution.

Apr 05 14:53:46 test systemd[1]: systemd-resolved.service: Start request repeated too quickly.

Apr 05 14:53:46 test systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.

Apr 05 14:53:46 test systemd[1]: Failed to start Network Name Resolution.

我已经做了以下尝试，但都没能解决问题：

• 在本地主机用multipass创建了Ubuntu 22.04 LTS的虚拟机，systemd-resolved.service启动完全正常；但把这个multipass生成的镜像上传到OpenStack后，还是出现同样的启动失败问题
• 在OpenStack里启动一台运行正常的Ubuntu 20.04 LTS虚拟机，通过sudo do-release-upgrade -d升级到22.04版本后，systemd-resolved.service再次出现了相同的启动失败情况

我现在完全摸不着头绪，既缺乏DevStack相关的排查经验，对systemd的细节也不太熟悉，不知道该从哪里入手寻找线索。希望有经验的大佬能给点思路或者解决方案，万分感谢！

备注：内容来源于stack exchange，提问作者Michal16511