我有一个正在运行的 ubuntu 18.04，并决定将其移至 Proxmmox 中的 VM。
配置包括一个桥接器，它在之前的系统中运行良好，但它并没有在 Proxmox VM 启动时出现。
这是我的 netplan 配置：
network:
renderer: networkd
ethernets:
ens18:
dhcp4: false
addresses: [172.18.0.4/29]
gateway4: 172.18.0.1
nameservers:
addresses: [8.8.8.8]
ens19:
dhcp4: false
ens20:
dhcp4: false
ens21:
dhcp4: false
bridges:
br0:
addresses: [10.0.0.1/16]
interfaces: [ens19, ens20, ens21]
gateway4: 10.0.0.1
dhcp4: false
version: 2
当系统启动时我可以运行
netplan apply
并且运行完美。
我也尝试过使用 crontab 来临时解决这个问题，
@reboot netplan apply
但它也不起作用。
netplan --debug generate
不会产生错误。
我在 journalctl 中看到了这些消息
Jul 11 10:20:49 kernel: br0: port 3(ens19) entered disabled state
Jul 11 10:20:49 kernel: br0: port 2(ens20) entered disabled state
Jul 11 10:20:49 kernel: br0: port 1(ens21) entered disabled state
Jul 11 10:20:49 systemd-networkd[643]: br0: Lost carrier
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 kernel: device ens19 left promiscuous mode
Jul 11 10:20:49 kernel: br0: port 3(ens19) entered disabled state
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 kernel: device ens20 left promiscuous mode
Jul 11 10:20:49 kernel: br0: port 2(ens20) entered disabled state
Jul 11 10:20:49 kernel: device ens21 left promiscuous mode
Jul 11 10:20:49 kernel: br0: port 1(ens21) entered disabled state
Jul 11 10:20:49 networkd-dispatcher[785]: WARNING:Unknown index 3 seen, reloading interface list
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 networkd-dispatcher[785]: WARNING:Unknown index 4 seen, reloading interface list
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 networkd-dispatcher[785]: WARNING:Unknown index 5 seen, reloading interface list
Jul 11 10:20:49 systemd-networkd[643]: ens19: Could not join netdev: No such device
Jul 11 10:20:49 systemd-networkd[643]: ens19: Failed
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 systemd-networkd[643]: ens20: Could not join netdev: No such device
Jul 11 10:20:49 systemd-networkd[643]: ens20: Failed
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 systemd-timesyncd[657]: Network configuration changed, trying to establish connection.
Jul 11 10:20:49 systemd-networkd[643]: ens21: Could not join netdev: No such device
Jul 11 10:20:49 systemd-networkd[643]: ens21: Failed
所以我怀疑在尝试创建桥梁时接口尚未准备好。
我一直在寻找一种方法来在这些接口准备就绪后执行 netplan apply，但还没有找到方法。我相信同一项服务可以同时完成这两件事。
为什么启动时不应用配置？我是不是丢失了什么？Proxmox 和 Ubuntu 桥接器存在问题吗？