The lxc instance cannot connect

##### ISSUE TYPE

* Bug Report

##### COMPONENT NAME

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##### CLOUDSTACK VERSION

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4.18
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##### CONFIGURATION

##### OS / ENVIRONMENT

ubuntu 22.04.5
##### SUMMARY

I have created an lxc instance【OS：centos 7】 and it appears to have started normally from the system. I used virsh -c lxc:///list on the host to check that lxc is also running. However, when I used virsh -c lxc:///console i-2-3-VM to enter the container instance, I was unable to use it properly. The prompt message is: Failed to create symlink/sys/fs/cgroup/net_cls: Operation not allowed; Did I not set it up properly somewhere;

2、
I logged into the virtual router and pinged the lxc instance's IP address in the virtual router, but it still doesn't work

##### STEPS TO REPRODUCE

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##### EXPECTED RESULTS

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##### ACTUAL RESULTS

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在 Ubuntu 22.04.5 上使用 CloudStack 4.18 重现该问题，使用运行 CentOS 7 的 LXC 实例以及报告中的 virsh console 和 virtual-router 检查。首先处理报告中的 cgroup 符号链接错误和连接失败；完成的标准是记录原因、所需配置，以及已验证的连接性或已确认的产品缺陷。

由索引模型根据 Issue 内容生成。