PVE 中创建 LXC 容器，没有网络

在创建 LXC 的时候选择了 DHCP ，但是启动完后，eth0 是 DOWN 的状态

[root@arch-template ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0@if44: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 9a:33:b8:9d:ce:2b brd ff:ff:ff:ff:ff:ff link-netnsid 0

手动 ip link set dev eth0 up 后，也没有自动获取网络配置。

LXC 模板用的 archlinux 。

[root@arch-template ~]# systemctl status NetworkManager.service
× NetworkManager.service - Network Manager
     Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: disabled)
    Drop-In: /usr/lib/systemd/system/NetworkManager.service.d
             └─NetworkManager-ovs.conf
     Active: failed (Result: exit-code) since Sat 2022-01-08 13:34:24 UTC; 11s ago
       Docs: man:NetworkManager(8)
    Process: 126 ExecStart=/usr/bin/NetworkManager --no-daemon (code=exited, status=226/NAMESPACE)
   Main PID: 126 (code=exited, status=226/NAMESPACE)
        CPU: 839us

Jan 08 13:34:24 arch-template systemd[1]: NetworkManager.service: Failed with result 'exit-code'.
Jan 08 13:34:24 arch-template systemd[1]: Failed to start Network Manager.
Jan 08 13:34:24 arch-template systemd[1]: NetworkManager.service: Scheduled restart job, restart coun>
Jan 08 13:34:24 arch-template systemd[1]: Stopped Network Manager.
Jan 08 13:34:24 arch-template systemd[1]: NetworkManager.service: Start request repeated too quickly.
Jan 08 13:34:24 arch-template systemd[1]: NetworkManager.service: Failed with result 'exit-code'.
Jan 08 13:34:24 arch-template systemd[1]: Failed to start Network Manager.
Jan 08 13:34:30 arch-template systemd[1]: NetworkManager.service: Start request repeated too quickly.
Jan 08 13:34:30 arch-template systemd[1]: NetworkManager.service: Failed with result 'exit-code'.
Jan 08 13:34:30 arch-template systemd[1]: Failed to start Network Manager.

请大家帮忙看下，谢谢